JP6537721B2 - Control board, control board manufacturing apparatus, and control board manufacturing method - Google Patents

Description

  The present invention relates to a control substrate of an air conditioner that controls an air conditioner, a control substrate manufacturing apparatus that manufactures a control substrate that configures the air conditioner, and a method of manufacturing the control substrate.

  In the patent document 1 below, there is a technology in which inspection of electrical characteristics and continuity of the control substrate and inspection of performing operation check of elements on the control substrate are performed with one inspection jig in the manufacturing process of the control substrate. It is disclosed.

  Further, in the case of inspecting a control substrate with an inspection jig, Patent Document 2 below reads a test program stored in an EEPROM (Electrically Erasable Programmable Read-Only Memory) of the control substrate when the control substrate is inspected with an inspection jig, and Therefore, there is disclosed a technique for storing the test result performed in the EEPROM.

JP-A-9-304466 Unexamined-Japanese-Patent No. 6-258401

  By the way, in the air conditioner, the manufactured control board is attached to the indoor unit and the outdoor unit, and as a result of the inspection, if there is no abnormality, it is shipped to the market. The cause of the failure that occurs after the control substrate manufacturing process or in the market may be attributed to the control substrate manufacturing process. However, in the above-mentioned prior art, only the control board test results are stored in the EEPROM. For this reason, there is a problem that it can not be determined whether the cause of the failure is due to the manufacturing process of the control substrate.

  The present invention has been made in view of the above, and it is possible to provide a determination material as to whether or not the cause of failure after the control substrate manufacturing process is caused by the control substrate manufacturing process. The purpose is to obtain a control board of a conditioner.

In order to solve the problems described above and achieve the object, the control board according to the present invention is a control board provided in an air conditioner, comprising: a control circuit that controls the air conditioner; A drive circuit to be driven and a non-volatile memory storing a control program describing a process to be executed by the control circuit. The non-volatile memory stores manufacturing history information in the manufacturing process of the control substrate. The manufacturing history information includes the inspection date, information specifying the power supply unit used in the control substrate manufacturing apparatus, information specifying the fixture used in the control substrate manufacturing apparatus, and pin board used in the control substrate manufacturing apparatus Information and test results .

  According to the present invention, it is possible to provide a judgment material as to whether or not the cause of failure in the control substrate manufacturing process and subsequent steps is due to the control substrate manufacturing process.

A layout view showing an example of a control substrate manufacturing line according to an embodiment of the present invention Functional configuration diagram schematically showing an example of the configuration of a control board manufacturing apparatus according to an embodiment of the present invention A perspective view schematically showing an example of the configuration of a control board manufacturing apparatus according to an embodiment of the present invention A diagram schematically showing an example of manufacturing history information according to an embodiment of the present invention Top view schematically showing an example of a control board according to an embodiment of the present invention Flow chart showing an example of the procedure of the manufacturing method according to the embodiment of the present invention A block diagram schematically showing an example of a hardware configuration of a computer device for realizing the function of a control board manufacturing apparatus according to an embodiment of the present invention

  Hereinafter, a control substrate, a control substrate manufacturing apparatus, and a control substrate manufacturing method according to an embodiment of the present invention will be described in detail based on the drawings. The present invention is not limited by the embodiment.

  FIG. 1 is a layout view showing an example of a control substrate manufacturing line according to an embodiment of the present invention. The control board manufacturing line includes lines 11a and 11b for arranging components to manufacture the control board while transporting the circuit board from the upstream toward the downstream. The number of installed lines is arbitrary, and in the example of FIG. 1, two lines 11a and 11b are provided.

  The lines 11a and 11b include an automatic insertion portion 12 for automatically inserting components into the circuit board flowing on the lines 11a and 11b, and a manual insertion portion 13 for manually inserting the components into the circuit board flowing on the lines 11a and 11b. And a solder bath for soldering between the parts inserted in the automatic insertion part 12 and the manual insertion part 13 and the circuit board, or between the parts and parts. What soldered between the part and the circuit board or between the part and the part in the solder bath 14 is the control board.

  The lines 11a and 11b also include a control substrate manufacturing apparatus 15 that inspects the control substrate that has passed through the solder tank 14 and writes manufacturing history information. The number of installed control substrate manufacturing apparatuses 15 is determined based on the control substrate manufacturing speed in one line 11a, 11b. Specifically, the number of control boards manufactured by the automatic insertion unit 12, the manual insertion unit 13 and the solder bath 14 per unit time is the number of control boards inspected by the control substrate manufacturing apparatus 15 per unit time and It is provided to be equal. In the example of FIG. 1, the case where two control board manufacturing apparatuses 15 are arranged in one line is shown.

  FIG. 2 is a functional configuration diagram schematically showing an example of the configuration of a control substrate manufacturing apparatus according to an embodiment of the present invention, and FIG. 3 shows an example of the configuration of a control substrate manufacturing apparatus according to an embodiment of the present invention. It is a perspective view shown typically. The control substrate manufacturing apparatus 15 includes a fixture 20 which is a jig for performing a test of the mounted control substrate 50, and a power supply unit 30 which supplies power to the fixture 20.

  The fixture 20 contacts the conductive pattern on the control board 50, and a control unit that inspects the control board 50 via the pins 21 for taking out various signals, the pin board 22 for holding the pins 21, and the pins 21. And. The control unit 23 operates the hardware on the control board 50 or takes out a signal to inspect the control board 50. The inspection of the control board 50 includes a mounting inspection to check whether the parts are mounted correctly, a continuity check to check if all the circuits are connected, and an output check to check whether the circuits are output correctly. including.

  The control unit 23 executes an inspection of the control substrate 50 in accordance with the inspection program, and determines whether the control substrate 50 is normal or not as a result of the inspection by the inspection unit 231 and the inspection unit 231. And a manufacturing history writing unit 232 writing the manufacturing history information including the inspection result in the non-volatile memory of the control substrate 50.

  The pins 21 are provided corresponding to the conductive patterns of the control substrate 50. That is, the arrangement of the pins 21 differs depending on the type of control substrate 50, and the inspection method also differs depending on the type of control substrate 50. For this reason, the fixture 20 is prepared for each type of control board 50.

  In the example shown in FIG. 3, the fixture 20 is provided with two pin boards 22a and 22b. According to such a configuration, two control boards 50 can be simultaneously inspected by one control board manufacturing apparatus 15. Here, one pin board 22a on which the control substrate 50 is placed is taken as an A face, and the other pin board 22b is taken as a B face. The control unit 23 may be provided for the A side and the B side, or one control unit 23 may control the A side and the B side. Although FIG. 3 shows an example in which two pin boards 22 a and 22 b are provided in the fixture 20, three or more pin boards 22 may be provided.

  The manufacturing history information is information including information at the time of manufacturing the control substrate 50 and an inspection result. FIG. 4 is a view schematically showing an example of manufacturing history information according to the embodiment of the present invention. The manufacturing history information 300 includes information 310 specifying the control substrate manufacturing apparatus 15, information 320 specifying inspection date and time, and information 330 indicating inspection results. The information 310 for identifying the control substrate manufacturing apparatus 15 includes information 311 for identifying the used power supply unit 30 and information 312 for identifying the used fixture 20. In addition, when the fixture 20 includes a plurality of pin boards 22, the information 310 identifying the control board manufacturing apparatus 15 further includes information 313 identifying the used pin board 22.

  In the example shown in FIGS. 3 and 4, a plurality of lines 11a and 11b are provided on the manufacturing line of the control substrate 50, and two control substrate manufacturing apparatuses 15 are provided on each of the lines 11a and 11b. The control board manufacturing apparatus 15 is provided with two pin boards. Therefore, the combination of the information 311 for specifying the power supply unit 30, the information 312 for specifying the fixture 20, and the information 313 for specifying the pin board 22 identifies which line 11a, 11b is the control substrate 50 manufactured. can do.

  In the manufacturing history information 300 of FIG. 4, 5-bit information 311 for specifying the power supply unit 30, 3-bit information 312 for specifying the fixture 20, 1-bit information 313 for specifying the pin board 22, and 5-bit Information 321 specifying the inspection date, information 322 specifying the 2-bit inspection time, information 323 specifying the 4-bit inspection month, and information 330 indicating the 1-bit inspection result. It also has a spare bit 340 for 3-bit expansion.

  The manufacturing history writing unit 232 identifies the identification information for identifying the power supply unit 30 of the control substrate manufacturing apparatus 15, the identification information for identifying the fixture 20, and the identification for identifying the pin board 22 on which the inspection unit 231 carries out the inspection. Information and are obtained in advance. Further, when the inspection of the control board 50 is completed, the manufacturing history writing unit 232 generates the manufacturing history information 300 including the information, the inspection result, and the date and time of the inspection. Then, the manufacturing history writing unit 232 writes the manufacturing history information in a predetermined address of the non-volatile memory of the control substrate 50 which has been inspected.

  FIG. 5 is a top view schematically showing an example of a control substrate according to the embodiment of the present invention. The control board 50 controls, on the circuit board 51, a control circuit 52 that controls the entire control board 50 and devices connected to the control board 50, a non-volatile memory 53 that stores a control program and manufacturing history information, and control And a drive circuit 54 for driving a device connected to the substrate 50. The control circuit 52 performs control based on the control program stored in the non-volatile memory 53. In the control program, in the case of an outdoor unit, a processing procedure for detecting a temperature, current or voltage by a detection circuit and controlling a compressor, an outdoor fan or an expansion valve is described.

  The non-volatile memory 53 is a storage medium capable of holding data even when power is not supplied, and is constituted by an EEPROM. The non-volatile memory 53 has a control program storage area for storing a control program, and a manufacturing history information storage area for storing manufacturing history information. The manufacturing history information storage area is provided at a predetermined address in the non-volatile memory 53. By this, manufacturing history information can be acquired only by reading out information of a predetermined address.

  Below, the manufacturing method of the control board 50 in the control board manufacturing apparatus 15 is demonstrated. FIG. 6 is a flowchart showing an example of the procedure of the manufacturing method according to the embodiment of the present invention. First, the fixture 20 corresponding to the type of control substrate 50 to be inspected is attached to the control substrate manufacturing apparatus 15. Then, the assembled control substrate 50 flowing on the lines 11 a and 11 b is placed on the pin board 22 of the fixture 20.

  Thereafter, the inspection of the control board 50 by the inspection unit 231 of the control unit 23 is performed. Here, first, the inspection unit 231 inspects in step S31 whether or not the component is correctly mounted on the circuit board 51. If the part is not correctly mounted, that is, No in step S31, the operator repairs the control board 50 so that the part is correctly mounted in step S34. After step S34, the process returns to step S31 again.

  If the part is properly mounted, that is, if the result of the step S31 is Yes, the inspection unit 231 inspects in step S32 whether or not all the circuits are conductive. If there is no circuit in the circuit, that is, if the result of the step S32 is No, in step S34, the operator repairs the control board 50 so that all the circuits are in a conductive state. After step S34, the process returns to step S31 again.

  If all the circuits are conductive, that is, if Yes in step S32, the inspection unit 231 performs inspection in step S33 to determine whether the circuits output signals correctly. If the circuit does not correctly output the signal, that is, No in step S33, the operator repairs the control board 50 so that the circuit correctly outputs the signal in step S34. After step S34, the process returns to step S31 again.

  On the other hand, when the circuit correctly outputs the signal, that is, in the case of Yes in step S33, since the control board 50 is a non-defective product as a result of the inspection, the manufacturing history writing unit 232 checks the inspection date and time in step S35. And write manufacturing history information including the information specifying the power supply unit 30, the information specifying the fixture 20, the information specifying the pin board 22 and the inspection result in the non-volatile memory 53 of the control board 50. Inspection ends by the above.

  An inspection program is provided for each of component confirmation in step S31, continuity check in all circuits in step S32, and output confirmation in step S33, and a signal is supplied to pin 21 according to the inspection program. Be done.

  After the control substrate 50 of the air conditioner is manufactured, the indoor unit and the outdoor unit are manufactured. At this time, the control substrate 50 for the indoor unit manufactured in FIG. 6 is attached to the indoor unit, and the control substrate 50 for the outdoor unit manufactured in FIG. 6 is attached to the outdoor unit. When a problem occurs in the indoor unit and outdoor unit manufacturing process or in the market, the manufacturing history information 300 stored in the control board 50 is read by a personal computer or a dedicated tool. Then, based on the manufacturing history information 300, it is determined whether the cause of the failure is due to the manufacturing of the control board 50 or not.

  For example, as a result of acquiring manufacturing history information 300 of control substrate 50 of the air conditioner in which a failure has occurred, when many pieces of manufacturing history information 300 include identification information of the same power supply unit 30, control substrate manufacturing It can be determined that the power supply unit 30 of the device 15 is highly likely to have a cause. In addition, when there is no common information in many pieces of manufacturing history information 300, it can be determined that the failure cause is not due to the manufacturing process of control board 50.

  The control board manufacturing apparatus 15 according to the embodiment is implemented by executing a program storing a processing procedure to be executed by the control board manufacturing apparatus 15 according to the above-described embodiment with a central processing unit (CPU) and a computer including a storage device. It is possible to realize the processing executed in

  FIG. 7 is a block diagram schematically showing an example of a hardware configuration of a computer device for realizing the function of the control substrate manufacturing apparatus according to the embodiment of the present invention. The computer device 800 includes a display device 801, an input device 802, a CPU 803, a non-volatile memory 804, a volatile memory 805, a display memory 806, and a communication interface 807, which are connected via an internal bus 808.

  The display device 801 is configured of a liquid crystal display device or an organic EL (ElectroLuminescence) display device. The input device 802 is configured of a keyboard and a mouse. The CPU 803 performs an operation. The non-volatile memory 804 is configured by a ROM. The volatile memory 805 is configured by a random access memory (RAM). The display memory 806 stores a display screen to be displayed on the display device 801. The communication interface 807 is an interface that communicates with an external device.

  Then, a processing procedure of processing to be executed by the control substrate manufacturing apparatus 15 is described, a program stored in the non-volatile memory 804 is loaded to the volatile memory 805, and executed by the CPU 803. This program is recorded on a recording medium readable by a computer device such as a hard disk, a CD (Compact Disk), a ROM, a MO (Magneto-Optical disk), a DVD (Digital Versatile Disk or Digital Video Disk). Alternatively, this program is distributed via a network (communication line) such as the Internet. In this case, a program is stored on the non-volatile memory 804 from an information processing terminal connected via the communication interface 807.

  In the present embodiment, the manufacturing history information 300 at the time of manufacturing the control substrate 50 is stored in the non-volatile memory 53 of the control substrate 50 of the air conditioner. Thereby, when a failure occurs in the air conditioner in a process downstream of the manufacturing process of control substrate 50 or in the market, it is determined whether the cause of the failure is due to the manufacturing process of control substrate 50 or not. Have the effect of being able to

  In addition, the control board manufacturing apparatus 15 performs the inspection date and time, the inspection result, and the control board that has been inspected when all of the mounting confirmation of the parts of the control substrate 50, the continuity confirmation of the circuit, and the output confirmation of the circuit are normal. The manufacturing history information 300 including the information for specifying the manufacturing apparatus 15 is written in the non-volatile memory 53. As a result, when a failure occurs in the air conditioner in a process downstream of the manufacturing process of the control substrate 50 or in the market, the cause of the failure is the manufacturing process of the control substrate 50 using the manufacturing history information 300 of the control substrate 50. It has the effect of being able to estimate whether it is due to

  Furthermore, the control substrate manufacturing apparatus 15 writes the manufacturing history information 300 to a predetermined address of the control substrate 50. As a result, it is possible to avoid the occurrence of a situation in which the address referred to for each control substrate 50 is different, and to facilitate access to the manufacturing history information 300 of all the control substrates 50.

  The configuration shown in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and one of the configurations is possible within the scope of the present invention. Parts can be omitted or changed.

  11a, 11b Line, 12 Automatic Insertion Unit, 13 Manual Insertion Unit, 14 Solder Tank, 15 Control Board Manufacturing Device, 20 Fixture, 21 Pin, 22, 22a, 22b Pin Board, 23 Control Unit, 30 Power Supply Unit, 50 Control Substrate, 51 circuit board, 52 control circuit, 53 non-volatile memory, 54 drive circuit, 231 inspection unit, 232 manufacturing history writing unit.

Claims (7)

In a control board provided in an air conditioner,
A control circuit that controls the air conditioner;
A drive circuit for driving devices that constitute the air conditioner;
A non-volatile memory storing a control program describing a process to be executed by the control circuit;
Equipped with
The non-volatile memory stores manufacturing history information in the manufacturing process of the control substrate ,
The manufacturing history information includes an inspection date, information specifying a power supply unit used in the control substrate manufacturing apparatus, information specifying a fixture used in the control substrate manufacturing apparatus, and a pin used in the control substrate manufacturing apparatus A control substrate characterized by including information for identifying a board and inspection results .   The control substrate according to claim 1, wherein the manufacturing history information is stored at a predetermined address in the non-volatile memory. The nonvolatile memory, the control substrate according to claim 1 or 2, characterized in that the EEPROM. In a control board manufacturing apparatus for inspecting a control board,
A pin provided corresponding to the conductive pattern of the control board, a pin board for holding the pin, and a fixture including a control unit that supplies a signal to the pin to inspect the control board;
A power supply unit for supplying power to the control unit;
Equipped with
The control unit is a non-volatile memory of the control board, information for specifying the fixture used in the inspection of the control board and the power supply unit, inspection results of the control board, and manufacturing history information including inspection date and time The control board manufacturing apparatus characterized by writing in. 5. The control substrate manufacturing apparatus according to claim 4 , wherein the control unit writes the manufacturing history information at a predetermined address in the non-volatile memory. The fixture has a plurality of pin boards,
Wherein the control unit, including the information for specifying the pinboard used in the inspection to the manufacturing history information, according to the manufacturing history information in claim 4 or 5, characterized in that writing into the nonvolatile memory Control board manufacturing equipment. A fixture provided with a pin provided corresponding to the conductive pattern of the control board, a pin board for holding the pin, and a control unit for supplying a signal to the pin to inspect the control board; And a power supply unit for supplying power to the control substrate.
Supplying a signal to the pin to inspect the control board placed on the fixture;
Writing manufacturing history information including information identifying the fixture and the power supply unit used for inspection, inspection date and time, and inspection result of the control substrate in the nonvolatile memory of the control substrate;
A method of manufacturing a control substrate, comprising:

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