JP2010231362A - Control device for electronic apparatus and air conditioner using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a control device for an electronic apparatus, having a function of avoiding update of correction data for correcting a detection error of each detection circuit and rewriting only parameter data needing update, when updating the parameter data of the control device for the electronic apparatus. <P>SOLUTION: The control device for the electronic apparatus evacuates the correction data to an independent RAM storage area inside a microcomputer mounted on an inverter control board, and combines and writes the received parameter data and the correction data when rewriting data of a nonvolatile memory to update only the parameter data. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an electronic device control device and an air conditioner using the control device.

  Conventionally, as an example of a control device that facilitates updating of parameter data by a user, for example, an “inverter device comprising means for limiting the operation of the initial value data group rewriting means to a person having a specific authority” ... "has been proposed (see, for example, Patent Document 1).

  Further, as a control device having an embedded microcomputer (microcomputer) system using an EEP-ROM as a storage means, for example, “a data code as rewrite information and a check code for determining whether the data code is normal or not” A first step of determining whether the data code is normal, whether the data code and the check code are rewritable codes, or whether the data code is abnormal, and A second step of rewriting the data code determined to be normal in the first step with a constant of the rewritable memory (3); and the data code and the check code in the first step. If it is determined that is a code that does not require rewriting, If it is determined that the data code is abnormal in the third step in which the rewritable memory (3) is not rewritten and in the first step, all rewriting to the rewritable memory (3) is not performed. A control device characterized by having the following steps is proposed (see, for example, Patent Document 2).

JP 2004-40966 A (Claim 2, FIG. 6) JP 2003-216487 A (Claim 3, FIG. 1)

  In the inverter device of Patent Document 1, the parameter data used for motor control is updated after the product has already been shipped, so that the user who purchased the product does not update the correction data unintentionally. There was a need to do. Therefore, complicated data protection control such as password management is required.

  Further, in the control device of Patent Document 2, only the parameter data that needs to be updated is updated among the data stored in the EEP-ROM, and at that time, it is necessary to collate with the check code corresponding to the parameter data. . However, since the check code also requires a storage area of 1 byte for 1 byte of parameter data, there is a problem that the parameter data used for control can be stored in half of the storage area of the EEPROM. .

  Therefore, as a first object of the present invention, the data in the storage means can be updated even in a production process in a separate building before shipment of the control device, without providing a special function to the data writing device of the conventional production facility. The present invention provides a control device for electronic equipment.

  Also, as a second object, when it is necessary to update the data in the storage means in the production facility of the electronic device, the control device for the electronic device can permit the update of the correction data that must be avoided by a simple switching operation. Is to provide.

  The control apparatus for an electronic device according to the present invention includes a first storage unit storing first parameter data and first correction data used for operation control of the electronic device, and the first storage unit stored in the first storage unit. In order to rewrite the parameter data and the first correction data, the second storage means for storing the second parameter data and the second correction data transmitted from the outside, and the second parameter data and the second correction data are received. And calculating means for rewriting the first parameter data and the first correction data with the second parameter data and the second correction data. The calculation means updates the first parameter data and updates the first parameter data. When the correction data is not updated, the first parameter data is stored as the third correction data in the second storage means, and then the first parameter data is updated. Is rewritten to the second parameter data, and the first correction data stored in the first storage means is rewritten to the third correction data stored in the second storage means. When updating the first correction data, after the first correction data is stored as the third correction data in the second storage means, the first parameter data is rewritten to the second parameter data, and the first correction data is updated. After the 3 correction data is rewritten to the second correction data, the first correction data is rewritten to the third correction data.

  According to the present invention, firstly, it is possible to update data in a storage means having an address that needs to be updated even outside the production facility of the control device. Second, the data storage area required by the storage means in the control device can be reduced, leading to a cost reduction effect.

It is a block diagram of the control apparatus of the air conditioner in Embodiment 1 of this invention. FIG. 3 is a layout diagram of a RAM and a ROM in the first embodiment of the present invention. It is a flowchart figure of operation | movement in Embodiment 1 of this invention. It is a block diagram of the control apparatus of the air conditioner in Embodiment 2 of this invention. It is a flowchart figure of operation | movement in Embodiment 2 and 3 of this invention.

  In the following first to fourth embodiments of the present invention, a case will be described in which an electronic device is an air conditioner, an EEP-ROM is used as a first storage unit, and a RAM is used as a second storage unit. In addition, the EEP-ROM data stored in the control device can be updated even in the pre-shipment process in which the control device body is moved from the control equipment production facility to another location and the air conditioner is assembled. Explain that.

Embodiment 1 FIG.
FIG. 1 is a configuration diagram of a control device for an air conditioner according to Embodiment 1 of the present invention.
The air conditioner control device of FIG. 1 includes a temperature detection circuit 1. The temperature detection circuit 1 detects the temperatures of the discharge pipe, the suction pipe, the outside air, the cooling fins of the inverter power module, and the like.

  1 includes a microcomputer 2, an EEP-ROM 3, a converter circuit 4, a voltage detection circuit 6 for detecting a bus voltage, and an AC current detection circuit 7 for detecting an alternating current flowing in the outdoor unit. I have.

  Parameter data and correction data are used for controlling the air conditioner. Here, the correction data is data for correcting detection errors of the temperature detection circuit and the current / voltage detection circuit mounted on the air conditioner. These are data that should not be updated even when the parameter data is updated under management different from the parameter data used for product control.

FIG. 2 is a layout diagram of the RAM and ROM in the first embodiment of the present invention.
The microcomputer 2 in FIG. 2 includes a RAM 100, a RAM 101, a RAM 102, and a CPU 107, and the EEP-ROM 3 includes a parameter data storage area 103 and a correction data storage area 104.
Further, a signal related to a data rewrite command is transmitted / received between the microcomputer 2 and the production facility 105.

Next, the operation will be described with reference to FIGS.
When power is supplied to the control device of the air conditioner, the parameter data stored in the parameter data storage area 103 in the EEP-ROM 3 is stored in the RAM 100 in the microcomputer 2 (S1). Further, the correction data stored in the correction data storage area 104 and to be updated is stored in the RAM 102 in the microcomputer 2 (S2). The role of the RAM 102 is to save the same data as the correction data that the correction data writing device 106 of the production facility has.

  Subsequently, when a write command signal for writing EEP-ROM data is sent from the EEP-ROM data writing device 105 of the production facility to the microcomputer 2 (S3), the microcomputer 2 receiving the signal receives the signal. A confirmation signal is transmitted to the production facility 105 (S4). Then, the production facility 105 that has received the reception confirmation signal sent from the microcomputer 2 transmits EEP-ROM data to be written in the EEP-ROM 3 to the microcomputer 2 (S5).

  Of the EEP-ROM data sent from the production facility 105, parameter data is temporarily stored in the RAM 100 of the microcomputer 2 and correction data is temporarily stored in the RAM 101 of the microcomputer 2 (S6). Then, data obtained by combining the parameter data stored in the RAM 100 and the correction data saved in the RAM 102 is written into the EEP-ROM 3 (S7). When the writing of data to the EEP-ROM 3 is completed, a processing completion confirmation signal is transmitted from the microcomputer 2 to the production facility 105 (S8), and a series of EEP-ROM data writing processing to the EEP-ROM 3 is performed. Is completed.

  As described above, even if data is rewritten to all addresses by the production facility 105, the correction data saved in advance in the RAM 102 is written in the EEP-ROM 3, so that the correction data is not updated.

Embodiment 2. FIG.
In the first embodiment, rewriting is not performed on correction data on the EEP-ROM 3 that must be avoided from being updated. However, in the second embodiment, a case will be described in which updating is required even for correction data for which updating should be avoided.

FIG. 4 is a configuration diagram of an air conditioner control device according to Embodiment 2 of the present invention.
The air conditioner control device of FIG. 4 includes a port state switching circuit 5 in addition to the units described in the first embodiment. In addition, the same part as FIG. 1 is shown with the same code | symbol.

  In FIG. 4, a port state switching circuit 5 for switching update permission / prohibition for correction data that must be avoided is connected to a functional port of the microcomputer 2. By switching the logic of the function port to the update permission state, the data from the production facility 105 can be updated even for the EEP-ROM data for which the above-mentioned update must be avoided.

FIG. 5 is a flowchart showing the operation of the second embodiment. Since the operation up to step 5 (S5) is the same as the operation described in the first embodiment, the operation after S5 will be described here.
In the state where the update of the correction data is permitted, when the EEPROM-ROM data is transmitted from the production facility 105, the transmitted EEPROM-ROM data is expanded in the RAM 100 and RAM 101 of the microcomputer 002 (S6) and the correction data Is received (S6A), the same data as the data in the RAM 101 is written into the RAM 102 (S6B). Thereby, even when the sequence described in the first embodiment is used, the data written in the correction data storage area 104 of the EEP-ROM 3 is updated to the value transmitted from the production facility 105.

  As described above, it is possible to switch the prohibition / permission of the update of the EEPROM-ROM data that must be avoided by a simple means of switching the logic of the function port of the microcomputer 2. Therefore, the port function switching circuit 5 can be provided not on the control device side of the air conditioner but on the production facility 105 side, and this function can be used without increasing the cost due to the addition of parts of the control device.

Embodiment 3 FIG.
In the second embodiment, the function of switching the function port of the microcomputer 2 on the hardware side is provided with respect to switching of prohibition / permission of updating of EEP-ROM data that must be avoided. In the third embodiment, two types of write command signals from the production facility 105, which are transmitted when transmitting the EEP-ROM data from the production facility 105, are prepared. Then, on the microcomputer 2 side, permission / prohibition of updating of the EEP-ROM data that must be avoided is switched according to the type of command signal received, so that it is dedicated on the hardware as in the second embodiment. It is possible to switch the prohibition / permission of the update of the EEP-ROM data that must be avoided without adding any other parts.

Embodiment 4 FIG.
In the fourth embodiment, a data consistency check operation after updating the parameter data described in the first to third embodiments will be described. When the writing process to the EEP-ROM 3 is completed, the control device is turned on once again in order to confirm that the parameter data has been normally written. Then, the EEP-ROM data is read from the EEP-ROM 3, and the updated parameter data is stored in the RAM 100 and the correction data is stored in the RAM 102. Then, a signal for reading data stored in the entire address of the RAM 100 is transmitted from the production facility 105 to the microcomputer 2. Next, the microcomputer 2 that has received the signal transmits the data stored in the entire addresses of the RAM 100 and the RAM 101 to the production facility 105. The master data held in the production facility 105 and the data received from the RAM 100 and RAM 101 are collated to confirm the update data consistency.

  In the said Embodiment 1-4, although the example of the air conditioner was shown as an electronic device, the said electronic device is not limited to an air conditioner. In the first to fourth embodiments, the EEP-ROM is used as the first storage unit and the RAM is used as the second storage unit. However, the storage unit is not limited to the EEP-ROM and RAM. .

  1 temperature detection circuit, 2 microcomputer, 3 EEP-ROM, 4 converter circuit, 5 port state switching circuit, 6 voltage detection circuit, 7 AC current detection circuit, 8 inverter power module, 100 microcomputer RAM (parameter data storage area) ), 101 RAM of microcomputer (correction data initial value storage area), 102 RAM of microcomputer (correction data saving area), 103 EEP-ROM parameter data storage area, 104 EEP-ROM correction data storage area, 105 Production Equipment (EEP-ROM data writing device), 106 Production equipment (correction data writing device).

Claims (7)

First storage means storing first parameter data and first correction data used for operation control of the electronic device;
Second storage means for storing second parameter data and second correction data transmitted from the outside in order to rewrite the first parameter data and the first correction data stored in the first storage means;
A calculation unit that rewrites the first parameter data and the first correction data to the second parameter data and the second correction data when the second parameter data and the second correction data are received;
When the calculation means updates the first parameter data and does not update the first correction data,
After the first correction data is stored as the third correction data in the second storage means, the first parameter data is rewritten to the second parameter data, and the first correction data stored in the first storage means is , Rewriting the third correction data stored in the second storage means,
When the calculation means updates the first parameter data and the first correction data,
After storing the first correction data as the third correction data in the second storage means, the first parameter data is rewritten to the second parameter data, and the third correction data is rewritten to the second correction data. Then, the first correction data is rewritten to the third correction data.
A control apparatus for an electronic device. In the control apparatus of the electronic device according to claim 1,
Whether the calculation means can execute the function of rewriting the third correction data to the second correction data can be switched by an operation from the outside.
A control apparatus for an electronic device. In the control apparatus of the electronic device of Claim 2,
The computing means is provided inside a microcomputer,
The external operation is logical change through a specific port of the microcomputer.
A control apparatus for an electronic device. In the control apparatus of the electronic device according to claim 3,
A method of changing the logic through a specific port of the microcomputer is that the microcomputer receives a port logic change command signal transmitted from the outside.
A control apparatus for an electronic device. In the control apparatus of the electronic device in any one of Claims 1-4,
When the first parameter data is updated, it is possible to confirm the consistency between the rewritten first parameter data stored in the first storage means and the second parameter data held by the outside.
A control apparatus for an electronic device. In the control apparatus of the electronic device in any one of Claims 1-5,
A non-volatile memory is used as the first storage means;
A control apparatus for an electronic device. The electronic apparatus control device according to claim 1,
An air conditioner characterized by that.

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