TW515903B - Apparatus and method for detecting open/short circuit - Google Patents

Abstract

The apparatus for detecting open/short circuit and its detection method are disclosed in the present invention. The invention is suitable for use in a circuit board, which contains a connection pin socket that is electrically connected with a chip and plural terminal resistors. The circuit contains the followings: a power supply source, in which one terminal of the power supply source is connected to the chip and the other terminal is electrically connected to the ground; a detector; which is electrically connected to the first pin of the connection pin socket for detecting the first pin of the connection pin socket and obtaining the first current value; a converting circuit, which is electrically connected to the detector for converting the first current value into the first voltage value; a control circuit, which is electrically connected to the converting circuit for generating the first control signal according to the first voltage value; and an alarm implement, which is electrically connected to the control circuit and is driven by the first control signal for outputting an alarm signal corresponding to the control of the first control signal so as to reach the purpose of judging whether or not the circuit between the first connection pin of the connection pin socket and the first connection pin of the chip is open/short circuit.

Description

515903 V. Description of the invention (l) The case of t is an open / short detection device and is suitable for detecting chips and central processing. $ A 4 # j7, no special Detection device and method for measuring debt. 'Electric inventions follow the field, and the system between the positive and negative devices cannot be connected to the reference 1 0 and the short circuit terminal is to be detected, and the measurement of the foot 1 1 is connected to the central processing provider. Terminal resistor base 11 King Technology, instead of progress, computers have been widely used in different main. The chipset and the central logic transmission signal on the motherboard can work normally, so when the chipset and the upper and middle c position ρ : The circuit is turned on when an open circuit or short circuit occurs, which prevents the computer system from ii :. Will ... brain system read = a picture U) and (b), the socket of the central processor on the early motherboard 14 is connected by a circuit, so each chipset 1G and the central processor's pins ^ Is there an open circuit between i? When the situation occurs, the pin diodes of the chipset 10 are used to prevent the instantaneous excessive electrostatic voltage from flowing through the chip to damage it (as described in Section-W (b)). (Shown), and cooperate with the ground wire connected to the three-purpose electric diode 14 and whether the circuit 12 between the chipset 10 and the central processing unit is conductive, and judge the connection between the chipset i 0 and the towel base 11 The feet are open or shorted. According to the first picture (c), due to the current design of the motherboard 15, the pins of the socket 11 of the device are connected to a terminating resistor R (for a logic level of the central processor signal pins), and All ends are connected in parallel. When you want to detect if there is an open circuit or short circuit between the tablet group 10 and the CPU, due to all

pd2314.ptd Page 5 515903 S. Description of the invention (2) The terminal resistors are connected in parallel, which will cause the current value of the chipset 10 and the center _ to flow to each other. It is impossible to judge the connection due to the situation of the road. There is an open circuit or a short description of the use of a three-meter ammeter between the feet 11; no; Figure-Figure (0) Measure the actual situation of each pin #Engineer uses the oscilloscope circuit. The number of international wheels is used to determine whether there is an open circuit or use this method to measure the early redundant female column. Disadvantages: Whether there is an open circuit or a short circuit in Lili has the following (1) wasting time and manpower, so it is necessary to measure all three or four hundred pins of the central processing unit. It will take a long time and waste. Manpower (1) High degree of difficulty. Because the correct output signal of each pin is different, the engineer must understand that there is an open circuit or a short circuit in each of the pins. U symptoms are correctly judged. Knowing the lack of technology, after careful study and research, and a spirit of perseverance, eventually developed the case detection device and its detection method ', n

SUMMARY OF THE INVENTION The main purpose of this case is to provide an open / short detection device and a detection method thereof, which can easily and quickly detect the right and double short circuit between the chip and the pin socket. Jian

pd2314.ptd Page 6 V. Description of the Invention (3) The purpose is to provide an open / short detection device f. The circuit board includes-a chat pin, and the pin is connected to several terminal resistors. The electric cable is connected to the chip, and the other end is connected to the chip. The other end is electrically connected. ', Σ is electrically connected to the first connection-conversion circuit of the pin base, and is electrically connected to the first and second current values; replaced by -the first voltage value; a control circuit' ::: 第 第- The current value is used to be electrically connected to the conversion circuit according to the first voltage value, and the device will generate a first control signal; and 为 will be electrically connected to the control circuit. It is used to respond to the first control signal; the second control signal driven by the first control signal reaches the second of the pin socket: the control output outputs a warning signal to determine whether the circuit is an open / short circuit pin. The circuit board in the first pin-to-pin machine of the chipset can be used in the open / new circuit detection device. According to the above-mentioned concept, the circuit board can be an open / short CPU socket pin detection device. The foot stand can be ~ According to the above concept, open / short-circuit several terminal resistance connections for gastric double ', outfitting The pins in the foot with a complex series of system level. 1Provide a logic pin for the CPU signal pin According to the above concept, open / short memory pin socket. According to the above-mentioned concept, the pin socket in the Yinjiangang device can be an open / short circuit connection to provide a memory, and the plurality of terminals in the device can be electrically connected to a logic level. 515903 V. Description of the invention (4) According to the above idea, the positive pole of the open / short-circuit dry battery is connected to the θ double- "device. The power supply can be a conversion circuit and the control circuit: the ground wire of the chip, the negative electrode Connected to the above-mentioned concept, the open / short-circuit detection ground wire is the ground wire of the circuit board. The ground wire of the device in the device can be a probe. According to the above concept, the current-voltage conversion circuit is based on the above concept. Display (LCD) A segment display according to the above conception. A sounder according to the above conception. A light diode (LED) according to the above conception. Pin connection of the chip according to the above conception. According to the above conception, the detector may be The conversion circuit in a gold open / short detection device can be 0. The alarm in the open / short detection device can be a liquid open / short detection device, the alarm can be a seventeen open / short detection device. The alarm device can be a bee open / short detection device. The pin socket can be a two-pole for the two ends of the pin of the chip. : Stop the damage caused by the excessively large electrostatic voltage flowing through the chip. The purpose of this case is to provide an open / short circuit detection device :: !! The pin base is electrically connected to the chip and a plurality of terminal resistors, including:-power supply, one end of which is connected to the chip, and the other =

pd2314.ptd Page 8 515903 V. Description of the invention (5) Use 2 :: xi-detector to electrically connect to the -pin of the pin base, the first pin of the pin base, and obtain -Th-current value; replaced by two =: electrically connected to the detector to convert the -th current value to the broadcast voltage value, an output circuit is electrically connected to the conversion circuit, and the voltage value is further generated -Input to judge whether the circuit between the first pin on 1 and the first pin of the chipset is open / short circuit. The instrument “j electric sand 疋 中 3 i η 'the pin socket in the open / short detection device can be a pin holder of -T central processing 1§. Conception' The pin socket in the open / short detection device It can be the pin socket of -memory. Q :: Up = Concept 'The power supply is a dry battery in the open / short circuit detection device. Electrically connected to the common ground wire of the conversion circuit and the control circuit. According to the above idea, the open / short circuit is detected as the ground wire of the circuit board. The ground wire of the chip in the device can belong to; The detector in the detection device may be a gold open / short circuit current-voltage conversion circuit according to the above concept. The conversion circuit in the detection device χ may be a open / short circuit according to the above concept, including: a control circuit, electrically connected During detection, the output circuit may include a voltage value to generate a first control function as the conversion circuit, which is based on the first control circuit, which is subject to the first and a warning purpose, which is electrically connected to the "brush" Signal driven to respond to the first

V. Description of the invention (6)-The control signal of the control signal outputs a warning of the first pin of the $ d ^ seat and the j-th pin of the chipset to achieve the purpose of judging the pin path. —Whether the circuit between the pins is open / short open / short detection 3 ^ The alarm can be centered according to the above concept. The crystal display (L C D) is a segment display according to the above concept. Think of the buzzer as described above. According to the above conception, the photodiode (LED) is connected to the pin of the chip according to the above conception. Opening / short-circuit detection. The device can be open / short-circuit detection. I _ The warning device in the device can be a bee-on / short-circuit detection. 3 ” In the display, the alarm device can be a round of seven shots = the pin base of the road Λ measuring device and the two ends of the static pin to prevent instantaneous excessively large-diodes, this case again-the purpose 俜; Flow through the wafer and cause damage. -Circuit board, the electricity ;;; package: a short-circuit detection method, suitable for connecting to a chip electrical pin socket, and the pin socket is for-terminal resistance connection, the steps are: $- & 2, connected to the delta chip and a ground wire; detecting the pin number: two and obtaining a first current value; renumbering the-current value; and because: the value 'according to the first voltage It should generate a first control letter to reach the age of f. The control output of the control signal should be a warning signal to break the electrical grid between the first pin of the pin socket and the first pin of the chipset. For the purpose of opening / shorting. According to the above idea, the circuit board can be a master in the open / short detection method.

1H

pd2314.ptd Page 10 515903 5 Description of the invention (7) Machine board. According to the above idea, open / short the pin socket of the CPU. In the double test method, the pin socket can be _ According to the above concept, it is opened / shorted to the pin socket of the memory. In the double test method, the pin socket can be _ according to the above concept, open / short dry battery. In the test method, the power supply can be _ According to the above concept, the open / short circuit is connected by the -detector and the pin socket-the current value is borrowed ,,, take.乂 According to the above idea, in the open / short circuit detection method, ^ P 筮 is converted by Lei Zheng 舾 4 哲 Like the first voltage value can be obtained through the conversion circuit according to the-current value. According to the above idea, the open / short detection method should be generated by a control circuit. The control can be based on the above concept, and the open / short detection method is generated by the warning device. The s incomplete ring is another object of this case is to provide a motherboard on a motherboard, which contains a pair of people, and a method, which is suitable for the electrical connection between a socket and a chip. The memory sun disk $ & amp ^ And the pin is connected, the steps are: provide-power supply; connect :: terminal resistance connected to the ground wire "test the first-pin _ of this pin socket, and obtain the H: connection value; The first current value is converted into a first-2 (first current voltage value) to generate an-output signal, which reaches the second one according to the circuit between the first electrical pin and the first pin of the chipset. Hungarian Open / Short Head pd2314.ptd 1 page 515903

Description of the preferred embodiment m !: Figures (a) ⑦ (b), which are schematic diagrams of the circuit structure of the open / short-circuit detection device of the first preferred embodiment and the first preferred embodiment of this case. The short-circuit detection device 21 is mainly applicable to a motherboard 20. The motherboard 20 includes a pin socket 202 connected to a central processing unit or a memory, and the pin socket 202 can be connected to a chip 201. The electrical connection is connected with a plurality of terminal resistors 203. The Shaw circuit may include a power supply 211, a debt detector 212, a current-voltage conversion circuit 213, and an output circuit 214. The power supply 211 may be a dry battery, and its positive electrode is connected to the ground wire of the chip 201 (that is, the ground wire of the motherboard) and the diode 2012 below the pin 201 of the chip 201 ( It is used to provide a logic level of the central processing unit signal pin.) The negative terminal is electrically connected to the common ground line of the current-voltage conversion circuit 213 and the output circuit 214. The detector 2 1 2 may be a metal probe, and detects the second pin of the pin base by contacting the pin 22 drawn from the first pin 20 2 1 of the pin base. A pin 2021 obtains a first current value Iin. As for the current-to-voltage conversion circuit 2 1 3, it is electrically connected to the sensor 212 'to convert the first current value iin into a first voltage value v. The output circuit 214 may include a control circuit 215 and an alarm 216. The control circuit 215 is electrically connected to the current-voltage conversion circuit 213 to receive the first voltage value and generate a first control signal according to the magnitude of the first voltage value. The warning device 2 1 6 is electrically connected to the control circuit 2 1 5 and is controlled by the first control unit.

515903 V. Description of the invention (9) Driven by Lu No. 4 to show 1 秫 outside the temple, and f $ 丨 the output of the first control signal should be controlled: say ^ reached to determine the pin Ludi of the foot seat-Whether the circuit between the pins is open / short circuit,:-The device of the group detects the other pins of the pin seat. Know the above eyes and refer to the second figure (A) When the motherboard 20 is connected with a plurality of terminal resistors 2.3 connected to the foot socket 2 ° 2 (used to raise the signal of V, J, or memory to talk to a logical quasi-script ;: Connect the plurality of terminal resistors 203. Please refer to the second figure again (tf f = two, = the signal pins on the pin base are from (electrical P 2 0 3, and all the resistors are connected in parallel, Enabling the detection device to perform detection. From the above embodiments, it can be known that the two road test devices in this case can be applied to both the terminal resistance and the non-terminal power: seven-segment display The warning device 216 can be a liquid crystal display (lcd bee One of a buzzer or a light emitting diode (LED) c Please refer to the third picture, which is the open / short detection device ^ rrir circuit 213 in this case, which can be included Including -Operational Amplifier and a 2132. The voltage value obtained after the operation amplifier circuit 2131 is amplified and the control circuit 215 can be clearly identified, and different controls are generated. Please refer to the third figure And the fourth figure. The fourth figure is an open / short-circuit detection method pd2314.ptd page 13 1 515903 V. Description of the steps of the method of the invention (10). This preferred embodiment uses a light-emitting diode (led In the device, only the bright green light-emitting diode indicates that the detection pin is 2 ^. Only the red light-emitting diode indicates that the detection pin is short-circuited, which means that the pin base has at least two pins. Short circuit. When neither light is on, it means that the detection pin is open, and it may be broken or the chip is soldered. The main steps of the open / short detection method may include: First, connect 5 volts to the dry battery. The positive electrode is connected to the ground wire of the chip, and the negative electrode is connected to the common ground wire of the electric current conversion circuit and the control circuit. Secondly, the f metal probe is in contact with a normal condition pin, and the voltage is adjusted to be set at the electric voltage. turn Change the variable resistance of the circuit until the green light-emitting diode (from the beginning, and then complete the corrective action. Then, touch the metal probe to the pin that is pulled out by the first pin of the foot = seat, and A first: current value is detected. Then, the first electrical value is converted into a first voltage value by a current-voltage conversion circuit. Then, the first voltage value is transmitted to the control circuit, so that the control circuit A No. 4 control is generated according to the first voltage value. Finally, the light emitting diode is driven by the first control signal, and the user judges the pin socket according to the light emitting diode ^ first connection When the circuit between the pin and the first pin of the chip is open / short or is hanging. In the same way, the other pins of this pin base are tested by the method described above. Please refer to the table below. The power supply of this open / short-circuit detection device is 5 · 5, and when the terminal resistance of the signal pin connected to the central processing unit or memory is 56 ohms, according to the detected current value The test results obtained.

515903 Invention description (π)

When the buzzer is used as a warning device, it is mainly based on the control of different control signals generated by the control power. The buzzer emits different types of sounds or the same sound but different frequency tones to inform the use. Whether the circuit between the pin base and the chip is open / short-circuited. To sum up, the open / short circuit detection device and the detection method of the present invention can effectively improve the conventional technology, which requires the use of an oscilloscope to check the pins, which is a waste of time and labor and a very difficult problem. The device of the present invention is used. And method Just use the probe to contact the pin drawn by the pin ^ and then according to the light-emitting diode, you can easily and quickly detect whether there is an open / short circuit between the chip and the pin base, and The invention can be applied to a motherboard with and without a terminating resistor at the same time. Therefore, the present invention has industrial value, thereby achieving the purpose of developing the present invention. This case has been modified by anyone who knows the art well, but it is not inferior to those who want to protect the scope of patent application.

515903 Simple illustration of the diagram ----------- ^ The solution to this case is illustrated by the following icon and green ^. Sigh and smash the description, and get a deeper understanding of the first picture (a) (b) (r) • Gan ^ Second picture U): This is a schematic diagram of the structure of the conventional technology. Schematic diagram of the circuit structure of a preferred embodiment of the opening / short-circuit detection. First, (b) 'It is the second / shortest circuit structure diagram of this case. H ~ bit / then device: two pictures: it is the circuit diagram of the open / short detection device of this case. Figure 4: This is a flowchart of the steps of the open / short detection method in this case. Description of the drawing number 10 12 13 15 201 2012 Chipset 11 Circuit board of the chipset and the base of the pin The main board of the chip l Chip: Diode pin 14: Diode 2 0: Main board 2011 Pins Pins Terminal resistance Power supply Current-voltage conversion circuit Control circuit 2131: Operational amplifier 2 2: Pin 202 202 1: First pin of the pin holder 2 03 2 1 · Open / short detection device 2 η 2 1 2: Detector 2 1 4: Output circuit 2 1 6: Alarm 2 1 3 2; Variable $ 1 213 215 resistance

pd2314.ptd Page 16

Claims (1)

515903 ------ VI. The scope of patent application includes-pin n test device 'suitable for a circuit board' several terminals tmjj on the circuit board, and the pin socket is electrically connected and restored to a chip An oolitic resistor connection, the circuit system includes: a grounded electrical power source, one end of which is connected to the chip, and the other end of which is connected to a 2: 1 connection: connected to the-pin of the pin socket, It is used to pin a leg of the brother, and obtain a first turn to r electricity: connected to the paste device 1 to voltage the-current value; the = circuit 'is used according to the-electricity ( The device is used for the control circuit. It is controlled by the first control signal, and it is controlled by the first control signal. The warning signal breaks the first pin of the 1 ^ pin socket. Whether it is for the purpose of opening / shorting. The pin is connected to the opening / short-circuit detection f W "β circuit board described in the first-to-H patent application scope of the film. The circuit board is a motherboard. The 3 · The open / short pin base described in item 丨 of the scope of the patent application is a pin socket detection device of the central processing unit, where The number of open / short terminals described in item 3 of the patent are r ... detection devices, in which the level. ^ Is used to talk to the signal of the central processor _ a logic 5. If a patent is applied for The open / short pin header described in item 丨 range is the -pin header of the memory. J device 'where the pd2314.ptd page 17 515903 6. Patent range testing device, in which the pin is a logic 6 • The open / short-circuit detection as described in item 5 of the patent range, and several terminal resistors are used to provide the signal level of the memory. 7. The open / short-circuit detection device described in item 丨 of the scope of the patent application. The power supply is a dry battery. The positive pole is connected to the ground wire of the chip, and the negative pole is electrically connected to the common ground of the conversion circuit and the control circuit. line,,. 8. The open / short detection device as described in item 7 of the scope of patent application, wherein the ground wire of the chip is the ground wire of the circuit board. ′, ^ 9 · The open / short-circuit detection device as described in item 丨 of the patent application scope is a metal detector. I 0. The open / short detection device as described in item 1 of the scope of patent application, the conversion circuit of the bean is a current-voltage conversion circuit. 1 Eight II · The open / short detection device as described in item 10 of the scope of patent application, in which the current-voltage conversion circuit includes a variable resistor connected to the first pin of the corresponding pin base Before the detection, a corrective action is performed. 1 2 · The open / short detection dream as described in item 1 of the patent application scope. The warning device is a liquid crystal display (LCD). ,,, /, T 1 3 · As described in the first patent application for open / short circuit detection, the warning device is a seven-segment display. & 5 1 4 · The open / short detection as described in item 1 of the scope of patent application w 苴 The warning device is a buzzer. Straight, /, 〒 1 5 · The open / short detection event as described in item 1 of the scope of patent application w i The warning device is a light emitting diode (LED). ， 直 ，，， 〒 1 6 · The open / short detection device according to item 1 of the scope of patent application, wherein pd2314.ptd 515903 The pin base is connected to the pins of the chip. As for the two ends of the pin of the chip, there are 7 t pole bodies, so as to prevent the transient over-static electrostatic voltage from flowing through the chip and causing damage. 17. —An open / short detection device, suitable for a circuit board, which includes a pin base, and the pin base is electrically connected to a chip and a plurality of terminal resistors, the circuit system Contains a power supply, whose-end is connected to the chip, and the other end is connected to the ground wire; a detector is electrically connected to the first pin of the pin base for detecting the pin The first pin of the foot socket, and obtain a first current value;, Mystery :: Change! Circuit, which is electrically connected to the debt tester 1 to: convert the -current value into a first voltage value; an output circuit electrically connected to the conversion circuit for outputting a signal according to the first electricity-to determine the No.-5 of the pin base Whether the circuit between the first pins is for the purpose of opening / shorting. 18. Open / short as described in item 17 of the scope of the patent application. The socket is a pin socket of a central processor. The j BSI application is called the open / short circuit as described in item 17 of the scope of patent. In the detection device, the pin base is a pin base of a memory. Caution /, 〒 2 0 · On / Short as described in item 17 of the scope of patent application. The power supply is a dry battery, and the negative pole of the positive connection line is electrically connected to the conversion circuit and the control line. Circuit detection device, of which & ^ the ground of the chip 1 common ground 21. The open / short circuit detection device described in item 20 of the scope of patent application, of which 515903 VI. The scope of patent application 3 The ground wire of the circuit board. 2 2 · Open / Short as described in claim 17 of the patent scope The detector is a metal probe. 2 3 · Open / short circuit as described in item 17 of the scope of patent application This conversion circuit is a current ephemeris conversion circuit. 2 4 · Open / short circuit as described in claim 17 of the patent scope. The output circuit includes: a control circuit electrically connected to the conversion circuit to generate a first control signal with a voltage value; and a warning device. , Which is electrically connected to the control circuit, driven by its serial number, and used to respond to the control number of the first control signal to determine whether the circuit between the first pin of the pin base and the pin is open / short-circuited purpose. 2 5 · Open / Short as described in item 24 of the scope of patent application The alarm device is a liquid crystal display (LCD). 2 6 · Open / Short as described in item 24 of the scope of patent application The alarm device is a seven-segment display. 2 7 · The open / short circuit as described in item 24 of the patent application scope. The alarm device is a buzzer. 2 8 · Open / short circuit as described in item 24 of the scope of patent application The alarm device is a light emitting diode (LED). 2 9 · Open / short-circuit the pin base as described in item 17 of the scope of patent application. The pin socket is connected to the pin of the chip, and each end has a diode to prevent instantaneous excessive static detection devices. The detection device includes a detection device, wherein the detection device is a warning signal that outputs the first control letter of the chipset according to the first power reception and the first system. The detection device includes a detection device, the detection device, and a detection device. Install the chip's electrical voltage, two of its pins flow through the crystal pd2314.ptd Page 20 515903 VI. Application for Patent Scope It may cause damage. 3: -A kind of open / short detection method, applicable to a circuit board, the ', dagger contains a pin base, and the number of pins, terminal resistance connection, its steps are: 4 electrical connection and provide a The power supply is electrically connected to the chip and a ground wire; the first pin of the pin socket, and obtains a first current value; converts the current value of the brother into a first voltage value; according to the first voltage value Generating a first control signal; and outputting a warning to the first lame of the pin base in response to the control of the first control signal; Whether the circuit between one pin is 31. Open / short as described in item 30 of the scope of the patent application. Before testing the first pin of the pin base, it still includes the following steps: Perform a corrective action; open / short the circuit board as described in item 30 of the patent application scope-the motherboard. ^ Go, where, as described in the scope of the patent application, open / short This pin base is-the central processor's pin base check = 'where, and is connected with a plurality of terminals: ;;. The foot socket and the foot socket 3 ”. Connect the open / short detection method as described in item 3 ° of the foot application range, in which a plurality of terminal resistors ^ _body money foot socket is related to :::: 青 patent range The open / short detection method according to item 30, wherein the power supply is a dry battery. Eighth page 21 pd2314.ptd 515903 VI. Patent application scope The on / j first current value described in item 30 of the patent application scope is obtained through a detector and the contact. 3 = 7 · The on / = th voltage value as described in item 30 of the scope of patent application is obtained by a conversion circuit. 38. Open as described in item 30 of the scope of patent application / The control number is produced by a control circuit = 9 · As described in item 30 of the scope of patent application / The warning signal is provided by a warning device Produced. 40. A kind of open / short detection method is applicable to a system including a pin base, and the pin base has a number of terminal resistance connections. The steps are: provide a power supply to electrically connect to the chip and detect The first pin of the pin base is obtained by converting the first current value into a first voltage to generate a first pin of the output pin base and a first / The purpose of the short circuit. The short-circuit detection method, wherein the first pin of the foot socket is connected to the short-circuit detection method, where the first current value is converted to the short-circuit detection method, which is generated. Short-circuit detection method, in which 2 boards, the motherboard 电 chip electrical connection and a multiple ground wire; wait-the first-current value; value; signal ’to determine whether the t-way of the chat room is open pd2314.ptd Page 22