JP2000161756A - Controller for apparatus such as cooling storage box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance productivity while reducing cost by connecting a sensor and a main control means with a signal line wired in an apparatus and constituting the sensor of a memory means having an ID code, a transmitting/receiving means for communicating a data with the main control means thereby sharing the parts and simplifying the wiring. SOLUTION: A temperature sensor 27 in the form of a connecting chip is connected with a signal line being connected with a control box and a capacitor 49 is charged by supplying the temperature sensor 27 with power when a high or low potential pulse signal constituting a data has high potential otherwise the capacitor 49 is discharged and other elements are conducted. When a Vcc power supply terminal 45 is connected with a feeder line, each element is fed with power from the feeder line. A CPU 43 fetches a temperature data detected by a temperature detecting element (sensor section) 48 through an A/D converter 47 and delivers the temperature data through the signal line to a controller after an ID mode, and the like, are written in a memory 44.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for a refrigerator for home use, a low-temperature showcase, a prefabricated refrigerator, a cooling storage such as a vending machine, an air conditioner and other devices.

[0002]

2. Description of the Related Art Conventionally, for example, in a cold storage,
A compressor, a condenser, a cooler, etc. constituting the cooling device are built in, or the compressor and the condenser are separately installed. After the refrigerant discharged from the compressor is condensed by the condenser and decompressed by the decompression device, The cooling air is supplied to a cooler to exert a cooling effect, and the cool air cooled by the cooler is circulated in the refrigerator by a cooling fan to cool to a predetermined low temperature.

Further, a condenser fan is installed around the compressor and the condenser, and the condenser and the compressor are air-cooled by the condenser fan.

[0004]

In such a cooling storage, temperature sensors are mounted according to various uses such as control of the temperature in the storage or protection of a compressor or a condenser, and the number of the sensors varies depending on the model. In addition, the number of fans and the number of dew-prevention heaters for preventing dew condensation differ depending on the model, so the wiring of the electrical system including switches that control them and the configuration of the control device that controls these also differ depending on the model. come.

[0005] For this reason, the productivity has been remarkably reduced, especially for business-use equipment produced in small quantities by other models, and improvement has been desired.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional technical problems, and has a remarkable improvement in productivity and reduction in cost due to common use of parts and simplification of wiring. A control device for a device such as a storage is provided.

[0007]

According to a first aspect of the present invention, there is provided a control device including a signal line wired to a device, main control means connected to the signal line, and a sensor connected to the signal line. The sensor includes a detection element, a storage means having its own ID code, a transmission / reception means for transmitting / receiving data to / from the main control means via a signal line, and a storage means for receiving data detected by the detection element and storing the data in the storage means. And a sensor-side control means for transmitting the data in the storage means to the main control means by the writing and transmitting / receiving means.

According to a second aspect of the present invention, there is provided a control device, comprising: a signal line wired to a device; main control means connected to the signal line; and a switching element connected to the signal line for controlling operation of a mounting part. The switching element comprises a switching unit, a storage unit having its own ID code, a transmission / reception unit for transmitting / receiving data to / from the main control unit via a signal line, and a switching unit based on data from the transmission / reception unit. Switching element side control means for controlling the means.

According to a third aspect of the present invention, there is provided a control device comprising: a signal line wired to a device; a main control means connected to the signal line; a sensor connected to the signal line; A switching element for controlling the operation of the component, the sensor comprising: a detection element; a storage means having its own ID code; a transmission / reception means for exchanging data with the main control means via a signal line; The sensor includes a sensor-side control unit that fetches the detected data, writes the data in the storage unit, and transmits the data in the storage unit to the main control unit by the transmission / reception unit, and the switching element has the switching unit and its own ID code. Storage means,
A transmission / reception unit that exchanges data with the main control unit via a signal line, and a switching element-side control unit that controls the switching unit based on data from the transmission / reception unit are provided.

A control device according to a fourth aspect of the present invention includes a signal line wired to the cooling storage, main control means connected to the signal line, and a temperature detecting sensor connected to the signal line. This sensor includes a temperature detection element, a storage means having its own ID code, a transmission / reception means for transmitting and receiving data to and from the main control means via a signal line, and taking in and storing temperature data detected by the temperature detection element. And a sensor-side control means for writing data to the means and transmitting data in the storage means to the main control means by the transmission / reception means.

According to a fifth aspect of the present invention, there is provided a control device for operating a signal line wired to a cooling storage, main control means connected to the signal line, and mounting parts such as a compressor and a fan connected to the signal line. A switching element for controlling the switching means, a switching means, a storage means having its own ID code, a transmission / reception means for exchanging data with the main control means via a signal line, and a transmission / reception means And switching element-side control means for controlling the switching means based on the data from

According to a sixth aspect of the present invention, there is provided a control device comprising: a signal line wired to a cooling storage; main control means connected to the signal line; a temperature detecting sensor connected to the signal line;
A switching element connected to the signal line for controlling the operation of mounting parts such as a compressor and a fan is provided.The sensor is a temperature detection element, a storage unit having its own ID code, and a main control unit via the signal line. Means for transmitting and receiving data to and from the means, and sensor-side control means for taking in the temperature data detected by the temperature detecting element, writing the data in the storage means, and transmitting the data in the storage means to the main control means by the transmission and reception means. The switching element controls the switching means, storage means having its own ID code, transmission and reception means for transmitting and receiving data to and from the main control means via a signal line, and controlling the switching means based on data from the transmission and reception means. And a switching element-side control means.

According to the present invention, the sensor-side control means of the sensor for detecting temperature or the like writes data detected by the detection element such as the temperature detection element into the storage means, and the main control means transmits and receives the signal through the signal line by the transmission / reception means. The main control means of the device such as the cooling storage can take in the data without any trouble.

In this case, the sensor stores its own I
Since the D code is held, the main control unit can identify the sensor by connecting the sensor to the signal line, and the wiring of the sensor is completed. As a result, it is possible to wire the sensor by a so-called plug-in, and it is possible to significantly simplify the wiring. Further, since the common software can be used for the main control means regardless of the number of sensors, the cost can be significantly reduced by sharing the main control means.

Further, the switching element side control means of the switching element for controlling the operation of the mounting components such as the compressor and the fan controls the switching means based on the data from the main control means received by the transmission / reception means via the signal line. Therefore, the main control means of the device such as the cooling storage can control the attachment parts of the device without any trouble.

In this case, since the switching element has its own ID code in the storage means, the main control means can identify the switching element by connecting the switching element to the signal line, and the wiring of the switching element. Is completed. This makes it possible to wire the switching elements by a so-called plug-in,
Significant simplification of wiring can be achieved. Further, since the common software can be used for the main control means regardless of the number of switching elements, the cost can be significantly reduced by the common use of the main control means.

According to a seventh aspect of the present invention, there is provided the control device according to the first aspect, wherein the sensor and / or the switching element comprises:
It is characterized by including a power storage element that performs charging while the signal line is at a high potential and discharges while the signal line is at a low potential to supply power to each unit.

According to the invention of claim 7, in addition to the above, the sensor and / or the switching element performs charging while the signal line is at a high potential and discharges while the signal line is at a low potential. Since it has a storage element that supplies the power of the means,
The sensor or the switching element operates with power from a signal line for transmitting and receiving data. Therefore, the wiring is completed only by connecting the sensor or the switching element to the signal line without connecting the sensor or the switching element to the power supply line, so that the wiring by plug-in can be further simplified. It becomes something.

Further, the control device according to the invention of claim 8 is characterized in that, in each of the above-mentioned inventions, the sensor or the switching element is incorporated in a mounting part mounted on equipment such as a cooling storage.

According to the invention of claim 8, in addition to the above-mentioned inventions, a sensor or a switching element is incorporated in a mounting part to be mounted on equipment such as a cooling storage, so that the mounting part is mounted on the equipment and the sensor or the switching element is mounted. Simply connecting the switching element to the signal line completes the wiring of the mounting components. As a result, assembly workability during production, or
Subsequent parts addition work becomes extremely easy.

[0021]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a schematic sectional view of a commercial refrigerator 1 as an embodiment of a device such as a cooling storage to which the present invention is applied, and FIG. 2 is a wiring diagram of an electric system of the refrigerator 1. In FIG. 1, a refrigerator 1 has a main body 5 composed of a heat insulating box 2 opening to the front, and a storage room 3 inside the heat insulating box 2. The front opening of the storage room 3 is closed by a door 4 so that it can be opened and closed.

In the storage room 3, a cooler 6 constituting a refrigeration cycle of a cooling device and a cooling fan 7 driven by a motor are provided. A dew-proof heater 8 for preventing dew condensation is provided at the opening edge of the heat-insulating box 2, and a door 4 is provided.
Control box 9 as the main control means
Operation panel 11 is attached.

On the other hand, a machine room 12 is formed below the heat-insulating box 2, and inside the machine room 12, together with the cooler 6, the compressor 1 constituting a refrigerating cycle of a cooling device.
3, a condenser 14, a condenser fan 16, and the like.

When the compressor 13 is operated, the high-temperature and high-pressure refrigerant discharged from the compressor 13 radiates heat in the condenser 14 to be condensed, is decompressed by a decompression device (not shown), and is supplied to the cooler 6. Is done. In the cooler 6, the refrigerant evaporates and exerts a cooling function. Thereafter, the low-temperature gas refrigerant returns to the compressor 13 again. When the cooling fan 7 is operated, the cool air cooled by the cooler 6 is circulated into the storage room 3, whereby the storage room 3 is cooled. In addition, when the condenser fan 16 is operated, outside air flows through the condenser 14 and the compressor 13, so that these are air-cooled. Further, when the dew-proof heater 8 is energized, the opening edge of the heat insulating box 2 is heated to prevent dew condensation.

Next, in FIG. 2, reference numeral 21 denotes an AC power supply line wired in the main body 5 of the cooling storage 1, and reference numeral 22 denotes a signal line for transmitting and receiving data. The control box 9 is connected to the AC power supply line 21 and the signal line 22, and the drive board 23 of the compressor 13, the power supply board 24 of each of the fans 7, 16 and the power supply board 26 of the anti-dew heater 8 are connected to an AC power supply. Connected to line 21.

The signal line 22 has a chip-shaped temperature sensor 27 and the chip-shaped switching elements 2 attached to the drive board 23 and the power supply boards 24 and 26, respectively.
8 are connected via connectors. Here, although one switching element 28 is shown on the power supply board 24, it is actually provided for each of the fans 7 and 16.

In the embodiment, the drive board 23 and the power supply boards 24 and 26 are composed of the compressor 13, the fans 7, 1
6 and the dew-proof heater 8, the drive board 23 and the power supply boards 24 and 26 are combined with the respective switching elements 28 together with the compressor 1
3, a configuration in which each of the fans 7 and 16 and the dew-proof heater 8 are built-in. Further, in a model such as the compressor 13 which needs to detect the temperature, the temperature sensor 27 is used.
Is also built in the compressor 13.

According to such a configuration, the wiring of these mounting parts can be achieved simply by connecting the switching elements 28 and the temperature sensors 27 incorporated in the compressor 13, the fans 7, 16 or the dew-proof heater 8 to the connector of the signal line 22. Since it is completed, assembly and wiring workability is further improved.

The structure of the control box 9 is shown in FIG.
Shown in The control box 9 is provided with a controller (substrate) 36. This controller 36
It comprises a CPU (microcomputer) 31, a memory 32 as storage means, an I / O interface 33, a bus I / O interface 34 as transmission / reception means, and the like. The control box 9 has L
A display 37 composed of an ED or the like, a switch 38 as an input means, a switch 39, and the like are provided. The display 37 and the switch 38 are connected to an I / O interface 33 and connected to the operation panel 11. It is arranged.

The bus I / O interface 3
Reference numeral 4 is connected to the signal line 22 via the switch 39, and exchanges data with the temperature sensor 27, the switching elements 28,... Via the signal line 22. Here, a plurality of refrigerators 1 are installed as shown in FIG. 10, and the switch 39 of the control box 9 of each refrigerator 1 is connected to an external control device such as an external personal computer P via a communication line 42 such as a telephone line. It is connected. The signal system connected to the signal line 22 is switched to the bus I / O interface 34 or the communication line 42 according to an instruction from the controller 36 or the personal computer P, and the connection between the bus I / O interface 34 and the communication line 42 is established. Is controlled.

In the controller 36, a predetermined communication protocol for performing data communication with the temperature sensor 27, the switching element 28, the personal computer P and the like, and software for identifying the temperature sensor 27 and the switching element 28 are set. It is assumed that

Next, the structure of the temperature sensor 27 is shown in FIGS. 4 to 6 and FIG. The temperature sensor 27 includes a CPU 43 as sensor-side control means, a memory 44 as storage means, an I / O interface 46 as transmission / reception means, an A / D converter 47, and an A / D converter 47.
, A sensor unit 48 as a temperature detecting element, a capacitor 49 as a power storage element, a diode 51 as a rectifying element, and the like.

In this case, the capacitor 49 is connected to the diode 5
1, and each element is connected to a connection point between the diode 51 and the capacitor 49. A diode 55 for signal waveform shaping is additionally connected between the input side of the diode 51 of the temperature sensor 27 and the ground. A potential (high potential) of, for example, +5 V is applied to the signal line 22, and data is composed of pulses that fall from the high potential to a low potential of 0 V, for example.

Then, when the temperature sensor 27 is connected to the signal line 22, power is supplied to each element as it is while the high-potential and low-potential pulse signals constituting data are at the high potential, and the capacitor 49 is connected. Is also charged. During the low potential period, the capacitor 49 is discharged from the capacitor 49 to supply power to each element.

The temperature sensor 27 has Vcc (DC +
5V) A power supply terminal 45 is also provided, and is connected to a connection point between the diode 51 and the capacitor 49. If the Vcc power supply terminal 45 is connected to a power supply line, each element is supplied with power from the power supply line. It is configured so that it can also operate. That is, in this case, each element operates without filling the capacitor 49, so that the convenience is improved when it is desired to quickly operate the temperature sensor 27 at the time of inspection or the like.

The CPU 43 fetches the temperature data detected by the sensor unit 48 via the A / D converter 47, and writes the data into the memory 44 once. Then, the controller 36 is connected to the controller 36 via the signal line 22 by the I / O interface 46.
, The temperature data written in the memory 44 is transferred to the signal line 2 by the I / O interface 46.
2 to the controller 36.

Here, the temperature sensor 27 is stored in the memory 44.
An ID code of the sensor itself, identification data indicating that the sensor is used, set value data such as an alarm temperature, a protocol for performing data communication with the controller 36, and the like are stored. If a failure occurs in the temperature sensor 27, the failure data is also written to the memory 44,
Sent to controller 36.

If the total length of the signal line 22 becomes long, the signal will be distorted. However, since the temperature sensor 27 is connected to the waveform shaping diode 55, the distortion of the signal waveform is corrected. The transmission and reception of data as described above is performed reliably.

The temperature sensor 27 is mounted on one surface of the substrate 52 having a width of about 5 mm as shown in FIG. 5, and the diode 55 is mounted on the other surface of the substrate 52. The temperature sensor 27 and the diode 55
The substrate 52 to which is attached is further molded in a resin 54 after being housed in a case 53. At this time, the surface of the substrate 52 has been subjected to the primer treatment,
4 and the waterproofness are improved.

Reference numeral 56 denotes a lead wire drawn from the substrate 52, and the surface thereof is also subjected to a primer treatment. Reference numeral 57 denotes a connector for connecting to the signal line 22. As described above, by disposing the chip of the temperature sensor 27 and the diode 55 on the substrate 52 and performing resin molding, the strength and waterproofness of the temperature sensor 27 are remarkably improved.
It can be used in poor environments.

On the other hand, the structure of the switching element 28 is shown in FIG. The switching element 28 includes a CPU 58 as a switching element side control unit, a memory 59 as a storage unit, an I / O interface 61 as a transmission / reception unit, an I / O interface 62 as a driver, and an I / O interface 62 as a driver. , A transistor 63 as a switching means, a capacitor 64 as a power storage element, a diode 66 as a rectifying element, and the like.

In this case, the capacitor 64 is connected to the diode 6
6, and each element is connected to a connection point between the diode 66 and the capacitor 64. When the switching element 28 is connected to the signal line 22, power is supplied to each element as long as the high-potential and low-potential pulse signals constituting data are at the high potential as described above, and the capacitor 64 is also supplied to the capacitor 64. Charged. While the potential is low, the capacitor 64 discharges power to supply power to each element.

As shown by the broken line in FIG. 7, the switching element 28 is also provided with a Vcc (DC + 5V) power supply terminal 65 connected to the connection point between the diode 66 and the capacitor 64, and this Vcc power supply terminal 65 is connected to the power supply line. If connected, each element of the switching element 28 can operate even by power supply from the power supply line. That is, in this case, each element operates without filling the capacitor 64.
The convenience is improved when the user wants to operate the camera 8 quickly.

When ON / OFF data is transmitted from the controller 36 via the signal line 22 by the I / O interface 61, the CPU 58 turns ON / OFF the ON / OFF data.
The transistor 63 is turned on / off by the I / O interface 62 based on the F data.

Here, the memory 59 stores an ID code of the switching element 28 itself, identification data indicating that the element is a switching element, a protocol for performing data communication with the controller 36, and the like. If a failure has occurred in the switching element 28, the data is also written into the memory 59, and the controller 36
Sent to.

The switching element 28 is connected to each drive board 2
3. The switching unit 68 is wired on the power supply boards 24 and 26 as shown in FIG. That is, 69 is a photocoupler comprising a photodiode 69A and a phototriac 69B, 71 is a resistor, 72 is a diode as a rectifying element, and 73 is a capacitor 74 as a power storage element.

In this case, the capacitor 74 is connected to the diode 7
A resistor 7 is connected between the connection point of the diode 72 and the capacitor 74 and the collector terminal (indicated by S2 in FIG. 7) of the transistor 63 of the switching element 28.
1 and the photodiode 69A are connected in series. The terminal S1 (FIG. 7) of the switching element 28 is connected before the diode 72. The photo triac 69B is interposed between the AC power line 21 and the compressor 13, the fans 7, 15 and the dew prevention heater 8, respectively.

When the diode 72 is connected to the signal line 22, power is supplied to the photodiode 69A via the resistor 71 as long as the high-potential and low-potential pulse signals constituting data are at the high potential. , The capacitor 74 is also charged. While the potential is low, the capacitor 74 is discharged from the capacitor 74 to supply power to the photodiode 69A.

Similarly, the diode 72 and the capacitor 7
Vcc power supply terminal 60 is connected to the connection point
If the power supply terminal 60 is connected to the power supply line, the photodiode 69A can operate even by power supply from the power supply line. That is, in that case, each element operates without filling the capacitor 74.
Convenience is improved when it is desired to operate quickly at the time of inspection or the like.

The operation of the above configuration will be described. In this case, it is assumed that the switch 39 connects the bus I / O interface 34 to the signal line 22. First, refrigerator 1
The operation at the completion of the assembly will be described. Assuming that the temperature sensors 27 and the switching elements 28 are connected to the signal line 22, the CPU 31 of the controller 36 first scans the connection status of each element (the temperature sensor 27 and the switching element 28) to the signal line 22. .

The temperature sensor 27 and the switching element 28
CPUs 43 and 58 have their own I.P.S. stored in the memories 44 and 59 in response to polling from the controller 36.
Reply D code. The CPU 31 of the controller 36 identifies the connection status between the temperature sensor 27 and the switching elements 28.
, And thereafter, data is transmitted to each element using this ID code.

Next, the actual control operation will be described. The CPU 31 of the controller 36 polls the temperature sensor 27 at a predetermined cycle. This poll is based on the ID
It is based on code. CPU of the temperature sensor 27
43 transmits the temperature data to the controller 36 as described above in response to this polling. CP of controller 36
U31 temporarily writes the received temperature data into the memory 32, compares the temperature data with the set temperature, and turns ON / O.
The FF data is transmitted to the signal line 22 together with the ID code of the switching element 28 of the drive board 23.

The C of the switching element 28 of the drive board 23
When receiving the ON / OFF data of its own ID code, the PU 58 receives the ON / OFF data of the
Is turned ON / OFF. ON / O of this transistor 63
The photodiode 69A is turned ON (light emission) by the FF /
The photo triac 69B is turned on / off, thereby turning on / off the compressor 13.

Since the fans 7, 15 and the dew-proof heater 8 are continuously energized, ON / OFF data to that effect is
It is transmitted based on the ID code of the switching element 28 of each of the power supply boards 24 and 26. Each switching element 28 operates or energizes each of the fans 7, 15 or the dew-proof heater 8 based on the ON / OFF data.

If a failure has occurred in the temperature sensor 27 or the switching elements 28,..., The failure data is transmitted from the CPU of each element to the controller 36.
Upon receiving the failure data, the CPU 31 of the controller 36 displays on the display 37 that the temperature sensor 27 or the switching element 28 has failed. Further, the switch 39 connects the bus I / O interface 34 to the communication line 42 to alert the personal computer P to that effect.

Further, in the situation where each refrigerator 1 controls individually as described above, the CPU of the controller 36
In the event that the switch 31 fails, the switch 39 connects the signal line 22 to the communication line 42 automatically or in accordance with an instruction from the personal computer P.
Connect to As a result, the transfer and control of data between the temperature sensors 27 and the switching elements 28... Will be replaced by the personal computer P thereafter, and each device will be controlled by the control from the personal computer P.

Next, when the respective refrigerators 1 are to be centrally controlled by the personal computer P, the switch 39 connects the signal line 22 to the communication line 42 according to an instruction from the controller 36 or the personal computer P. Thus, similarly, the exchange and control of the data between the temperature sensors 27 and the switching elements 28... Will be replaced by the personal computer P thereafter.
Are controlled centrally.

For example, when starting the compressors 13 of the refrigerators 1..., The compressors 13 are started at different timings. Thereby, control such as reducing the maximum power consumption and leveling the power is performed.

In the embodiments, the present invention has been described using a commercial refrigerator. However, the present invention is not limited to this, and various electric devices such as a home refrigerator, a low-temperature showcase, a prefabricated refrigerator, an air conditioner, and a vending machine, or The present invention is also effective for home automation and security systems in automobiles and houses.

Furthermore, although the temperature sensor is taken up as a sensor in the embodiment, it is also effective as a humidity sensor or a pressure sensor by using an element for detecting humidity or pressure as the sensor unit.

[0061]

As described in detail above, according to the present invention, the sensor-side control means of a sensor for detecting temperature or the like writes data detected by a detecting element such as a temperature detecting element into a storage means, and a signal is transmitted and received by a transmitting / receiving means. Since the data is transmitted to the main control unit via the line, the main control unit of the device such as the cooling storage can take in the data without any trouble.

In this case, the sensor stores its own I
Since the D code is held, the main control unit can identify the sensor by connecting the sensor to the signal line, and the wiring of the sensor is completed. As a result, it is possible to wire the sensor by a so-called plug-in, and it is possible to significantly simplify the wiring. Further, since the common software can be used for the main control means regardless of the number of sensors, the cost can be significantly reduced by sharing the main control means.

The switching element side control means of the switching element for controlling the operation of the mounting components such as the compressor and the fan controls the switching means based on the data from the main control means received by the transmission / reception means via the signal line. Therefore, the main control means of the device such as the cooling storage can control the attachment parts of the device without any trouble.

In this case, since the switching element has its own ID code in the storage means, the main control means can identify the switching element by connecting the switching element to the signal line, and the switching element wiring Is completed. This makes it possible to wire the switching elements by a so-called plug-in,
Significant simplification of wiring can be achieved. Further, since the common software can be used for the main control means regardless of the number of switching elements, the cost can be significantly reduced by the common use of the main control means.

According to the seventh aspect of the present invention, in addition to the above, each of the sensor and the switching element charges while the signal line is at a high potential and discharges while the signal line is at a low potential. Since it has a storage element that supplies the power of the means,
The sensor or the switching element operates with power from a signal line for transmitting and receiving data. Therefore, the wiring is completed only by connecting the sensor or the switching element to the signal line without connecting the sensor or the switching element to the power supply line, so that the wiring by plug-in can be further simplified. It becomes something.

According to the eighth aspect of the present invention, in addition to the above-mentioned inventions, a sensor or a switching element is incorporated in a mounting part to be mounted on a device such as a cooling storage. Simply connecting the switching element to the signal line completes the wiring of the mounting components. As a result, assembly workability during production, or
Subsequent parts addition work becomes extremely easy.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of a commercial refrigerator according to an embodiment of the present invention.

FIG. 2 is an electrical wiring diagram of the refrigerator of FIG. 1;

FIG. 3 is a block diagram of an electric circuit of the control box.

FIG. 4 is a block diagram of an electric circuit of the temperature sensor.

FIG. 5 is a perspective view of a temperature sensor.

FIG. 6 is a plan view showing a state where the temperature sensor is molded.

FIG. 7 is a block diagram of an electric circuit of the switching element.

FIG. 8 is an electric circuit diagram of a switching unit using a switching element.

FIG. 9 is a side view of a state where the temperature sensor is molded.

FIG. 10 is a diagram showing a state in which a plurality of refrigerator control boxes are connected to a personal computer via a communication line.

[Explanation of symbols]

 1 Refrigerator 6 Cooler 7 Cooling fan 8 Dew-proof heater 9 Control box 13 Compressor 14 Condenser 16 Condenser fan 22 Signal line 27 Temperature sensor 28 Switching element 31, 43, 58 CPU 32, 44, 59 Memory 46, 61 I / O interface 48 Sensor unit 49, 64 Capacitor 51, 66 Diode 63 Transistor 69 Photocoupler 69A Photodiode 69B Phototriac

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Katsumi Maekawa 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Kazuya Imamura 2--5 Keihanhondori, Moriguchi-shi, Osaka No. 5 Sanyo Electric Co., Ltd. (72) Inventor Tsutomu Ishikura 2-5-5 Keihanhondori, Moriguchi-shi, Osaka F-term in Sanyo Electric Co., Ltd. 3E044 AA01 AA20 CC08 DA10 DB16 DC06 DE01 DE02 EA09 EB09 FB11 FB14 3L045 AA02 BA01 CA02 DA02 MA02 NA09 NA12 PA02 PA06 3L061 BA01 BA03

Claims (8)

[Claims] 1. A device comprising: a signal line wired to a device; main control means connected to the signal line; and a sensor connected to the signal line. The sensor includes a detection element and its own ID code. A transmission / reception unit for transmitting / receiving data to / from the main control unit via the signal line, and taking in the data detected by the detection element and writing the data in the storage unit, and the storage unit by the transmission / reception unit And a sensor-side control means for transmitting data in the main control means to the main control means. 2. A signal line wired to a device, main control means connected to the signal line, and a switching element connected to the signal line and controlling operation of a mounting part, wherein the switching element is Switching means, storage means having its own ID code, transmission / reception means for transmitting / receiving data to / from the main control means via the signal line, and controlling the switching means based on data from the transmission / reception means. A control device for a device, comprising: a switching element-side control unit. 3. A signal line wired to the device, a main control unit connected to the signal line, a sensor connected to the signal line, and connected to the signal line to control the operation of the mounting part. A switching element, wherein the sensor comprises: a detection element; a storage means having its own ID code; a transmission / reception means for exchanging data with the main control means via the signal line; And a sensor-side control unit for transmitting the data in the storage unit to the main control unit by the transmission / reception unit, and the switching element includes a switching unit and its own ID. A storage unit having a code, a transmission / reception unit for exchanging data with the main control unit via the signal line, and a transmission / reception unit based on data from the transmission / reception unit. Control device of a device which is characterized in that it comprises a switching element side control means for controlling the switching means. 4. A signal line wired to a cooling storage, a main control means connected to the signal line, and a temperature detecting sensor connected to the signal line, the sensor comprising a temperature detecting element. And storage means holding its own ID code, transmission and reception means for transmitting and receiving data to and from the main control means via the signal line, and reading and writing the temperature data detected by the temperature detection element into the storage means. And a sensor-side control unit for transmitting data in the storage unit to the main control unit by the transmission / reception unit. 5. A signal line wired to a cooling storage, a main control means connected to the signal line, and a switching element connected to the signal line and controlling operation of mounting parts such as a compressor and a fan. The switching element includes a switching unit, a storage unit having its own ID code, a transmission / reception unit for transmitting / receiving data to / from the main control unit via the signal line, and a data transmission / reception unit based on the data from the transmission / reception unit. A control device for a cooling storage, comprising: a switching element side control means for controlling the switching means. 6. A signal line wired to the cooling storage, main control means connected to the signal line, a temperature detection sensor connected to the signal line, and connected to the signal line,
A switching element for controlling operation of attachment parts such as a compressor and a fan, wherein the sensor includes a temperature detection element, a storage unit having its own ID code, and the main control unit and the data via the signal line. Transmitting and receiving means, and sensor-side control means for taking in the temperature data detected by the temperature detecting element, writing the data in the storage means, and transmitting the data in the storage means to the main control means by the transmitting / receiving means. In addition to the above, the switching element includes a switching unit, a storage unit having its own ID code, a transmission / reception unit for transmitting / receiving data to / from the main control unit via the signal line, and data from the transmission / reception unit. And a switching element side control means for controlling said switching means based on said cooling means. Control device. 7. The sensor and / or the switching element,
3. A power storage element that performs charging while the signal line is at a high potential and discharges while the signal line is at a low potential to supply power to each unit. 7. A control device for a device such as a cooling storage according to claim 3, claim 4, claim 5, or claim 6. 8. The sensor according to claim 1, wherein the sensor or the switching element is incorporated in a mounting part mounted on a device such as a cooling storage. A control device for a device such as a cooling storage according to claim 6.