CN101487650B - Cooling system, control device, and control program - Google Patents

Abstract

The invention relates to a cooling system, a control device and a control program. The cooling system is provided in which an integrated controller (10) controls the compressor for compressing a refrigerant and at least one constituent device which is a separate device from the compressor and that constitutes a refrigerant circulation circuit together with the compressor. The integrated controller has a control data generation unit (16) that controls the compressor using a compressor sensor for detecting a first physical value, which is a physical value of the refrigerant at the time of normal operations, and an abnormality detection unit (13) for detecting an abnormality of the compressor sensor. The control data generation unit controls the compressor using a constituent device sensor for detecting a second physical value that is a physical value having a close correlation with the first physical value in place of the compressor sensor when the abnormality was detected by the abnormality detection unit.

Description

Cooling system, control device and control program

Technical field

The present invention relates to a kind of cooling system, control device and control program, said cooling system has utilized and has constituted the constitution equipment of refrigerant circulation loop to what cold-producing medium carried out the compressor for compressing equipment different with compressor with conduct with compressor.

Background technology

In the past; Make the cooling system of the refrigerant circulation loop of cold-producing medium circulation as utilization, the air-conditioning system of the air conditioning of carrying out the interior spaces such as shop of being widely used and the commodity in the showcase that is provided with in the shop etc. are carried out the refrigerated storage/refrigerating system of freezer.

The refrigerant circulation loop that uses in such cooling system has: cold-producing medium is carried out compressor for compressing; And constitution equipment, it is that equipment and the compressor different with compressor constitutes refrigerant circulation loop together.Here, for constitution equipment, in air-conditioning system, for example be heat exchanger, for example showcase or condenser in refrigerated storage/refrigerating system.

Compressor has the sensor that suction pressure to compressor (or inlet temperature etc.) detects, and generally controls compressor according to the sensor values that this sensor is exported.Therefore, the sensor that in compressor, is provided with has taken place under the unusual situation such as fault, uncontrollable compressor.

As tackling the technology that unusual situation has taken place the sensor that is provided with in the compressor, following cooling system (with reference to patent documentation 1) has been proposed.Particularly, in the cooling system that patent documentation 1 is put down in writing, be provided with suction pressure sensor, inlet temperature sensor, ejection pressure sensor and ejection temperature sensor in the compressor and amount to four sensors.

And in the cooling system that patent documentation 1 is put down in writing, any in above-mentioned four sensors taken place when unusual, and the sensor values that utilizes its excess-three sensor to export compensates the sensor values that unusual sensor has taken place.

Patent documentation 1: the spy opens 2002-188874 communique (claim 1, Fig. 1)

But, in the cooling system that patent documentation 1 is put down in writing, have following problem.Particularly, in the cooling system that patent documentation 1 is put down in writing, owing to need a plurality of sensors be set, cause the scale of compressor assembly to increase, and have the control complicated problems compressor.

And, in the method that patent documentation 1 is put down in writing, there is following problem, that is, can't be applied to only be provided with in the compressor situation of a sensor, if the sensor that is provided with in the compressor has taken place compressor is remained in operation rightly.

Summary of the invention

The present invention realizes for solving above-mentioned problem; Purpose is to provide under a kind of situation that a plurality of sensors are not set in compressor, and the cooling system, control device and the control program that compressor are remained in operation when unusual have taken place in the sensor that also can in compressor, be provided with.

A kind of cooling system of the present invention possesses: cold-producing medium is carried out compressor for compressing (compressor 51); (for example showcase 53,54,55 with at least one constitution equipment ...), it is that equipment and the said compressor different with said compressor constitutes refrigerant circulation loop together.Said cooling system also has: compressor is with sensor (for example suction pressure sensor 51d), and it is arranged at said compressor, and detection is used as the first sensor value as first physical quantity (for example suction pressure) of the physical quantity of said cold-producing medium; Constitution equipment is with sensor (for example temperature sensor 53b, 54b, 55b ...); It is arranged at said constitution equipment; Detect second physical quantity (the for example internal temperature of showcase) as second sensor values, said second physical quantity be receive the influence of said first physical quantity or said first physical quantity is exerted an influence have the physical quantity of substantial connection with said first physical quantity; Compressor control portion (compressor controller 20), it is controlled said compressor; And abnormity detection portion (abnormity detection portion 13), it detects said compressor unusual with sensor.Said compressor control portion utilizes said compressor with sensor said compressor to be controlled when running usually; Detecting by said abnormity detection portion under the said unusual situation; Replace said compressor and use sensor, utilize said constitution equipment said compressor to be controlled with sensor.

According to such cooling system, the constitution equipment that is provided with in the constitution equipment detects with the physical quantity that the physical quantity of sensor pair and cold-producing medium has substantial connection.Here, substantial connection is meant that the opposing party also can correspondingly change such relation if a side changes then.As an example; Detect with sensor at compressor under the situation of the suction pressure of compressor, constitution equipment detects showcase with sensor storehouse temperature or refrigerant pressure, the suction pressure of compressor and the storehouse temperature of showcase or refrigerant pressure have substantial connection.That is, the suction pressure of compressor is low more, and the storehouse temperature of showcase is low more.Under this situation, the suction pressure of compressor is equivalent to first physical quantity, and the storehouse temperature of showcase or refrigerant pressure are equivalent to second physical quantity.

Therefore,, use sensor, compressor is suitably remained in operation through utilizing constitution equipment to replace compressor with sensor even compressor is unusual with taking place in the sensor.

Here, compressor need not to be provided with a plurality of with sensor, can be merely one.That is, need not in compressor, to be provided with a plurality of sensors, can avoid the scale of compressor assembly to increase.And; In compressor, only be provided with under the situation of a sensor, even the sensor that is provided with in the compressor has taken place unusually, owing to can utilize the constitution equipment of other equipment to use sensor; Therefore also can control, thereby compressor is suitably remained in operation compressor.

And then; Because the sensor that in compressor, is provided with has taken place under the unusual situation; Can use the constitution equipment of both having deposited that is provided with in the constitution equipment of both having deposited and control compressor, therefore, need not to append new sensor with sensor; And avoid number of sensors to increase, and can tackle the sensor that is provided with in the compressor unusual situation has taken place.

In the cooling system that above-mentioned characteristic relates to; Preferred said constitution equipment is provided with a plurality of with sensor; Said cooling system also possesses coefficient correlation calculating part (coefficient correlation calculating part 18); This coefficient correlation calculating part is pressed each said constitution equipment with detected said second sensor values of sensor, the coefficient correlation of the dependency relation of said second sensor values of represents and said first sensor value.

According to such cooling system, the coefficient correlation of utilizing the coefficient correlation calculating part to be calculated can realize various controls.

In the cooling system that above-mentioned characteristic relates to; Preferably also has alternative sensor selection portion (alternative sensor selection portion 14); It is being detected by said abnormity detection portion under the said unusual situation; Based on the said coefficient correlation of utilizing correlation function to calculate by said coefficient correlation calculating part; With selecting to detect with the said constitution equipment of maximally related said second sensor values of said first sensor value to use sensor the sensor, the said constitution equipment that is used as in the control of said compressor, using is an alternative sensor with sensor from said constitution equipment.

According to such cooling system; Because alternative sensor selection portion can detect with compressor with selection the sensor from constitution equipment and be used as alternative sensor with the constitution equipment of maximally related second physical quantity of first physical quantity that sensor detected with sensor; Therefore, can select appropriate alternative sensor.

In the cooling system that above-mentioned characteristic relates to; Preferred said constitution equipment is provided with a plurality of; Said cooling system also has: governor motion (for example flow regulator 53e, 54e, 55e ...), it is arranged in each said constitution equipment, and said second physical quantity is regulated; With the selected portion's (equipment is selected portion 19) of equipment; The regulated quantity information of degree (the for example aperture of the valve) size that it is regulated said second physical quantity based on expression, selected from said constitution equipment have a said constitution equipment that the degree that said second physical quantity is regulated is the said governor motion of optimum value.

According to such cooling system, if degree the best that governor motion is regulated second physical quantity, then the relation of first physical quantity and second physical quantity becomes close.On the other hand, the degree that governor motion is regulated second physical quantity is more little, and the relation of first physical quantity and second physical quantity is become estranged more.

Therefore, the selected portion of equipment selected from constitution equipment to have the degree that second physical quantity is regulated be the constitution equipment of the governor motion of optimum value.That is to say that the constitution equipment that is provided with in the selected constitution equipment is used sensor, is to detect the sensor that has second physical quantity of substantial connection with first physical quantity.

In the cooling system that above-mentioned characteristic relates to, preferred said alternative sensor selection portion from by the said constitution equipment that is provided with the selected said constitution equipment of the selected portion of said equipment with in the sensor, utilize said coefficient correlation to select said alternative sensor.

According to such cooling system, the constitution equipment that alternative sensor selection portion is provided with from the constitution equipment of being selected by the selected portion of equipment is with selecting alternative sensor in the sensor.Like this, through selected suitable constitution equipment from constitution equipment, and then the constitution equipment that from selected constitution equipment, is provided with can be selected the alternative sensor that is more suitable for selecting alternative sensor in the sensor.

In the cooling system that above-mentioned characteristic relates to, preferably also have: communication control unit (communication control unit 12), it is sent to said compressor control portion with said constitution equipment with said second sensor values that sensor detected; With a plurality of Equipment Control portion ( showcase controller 40a, 40b, 40c that said constitution equipment is controlled ...); Said communication control unit obtains said second sensor values through communicating from said Equipment Control portion with said Equipment Control portion; Detecting by said abnormity detection portion under the said unusual situation; The said Equipment Control portion that will control said constitution equipment with said alternative sensor than other said Equipment Control portions more preferably as communication object; And; Said communication control unit is being detected by said abnormity detection portion under the said unusual situation; Extraction comprises the significant data of said second sensor values that said alternative sensor detects; And make said significant data than comprising the common high priority data of other said constitution equipments with said second sensor values that sensor detected, according to the transmitted frequency that the makes said significant data mode higher, transmit to said compressor control portion than the transmitted frequency of said common data.

According to such cooling system, communication control unit transmits second sensor values that the constitution equipment sensor is detected to compressor control portion successively.Under the quantity much more very situation of constitution equipment, for second sensor values that is detected to compressor control portion all constitution equipment sensors of transmission needs the long period with sensor.In this case, the cycle of transmitting second sensor values that alternative sensor detected to compressor control portion is elongated, is being detected by abnormity detection portion under the unusual situation, and compressor control portion can't suitably control compressor.

Therefore, communication control unit preferentially is sent to compressor control portion than other constitution equipments with second sensor values that sensor detected with second sensor values that alternative sensor detected being detected by abnormity detection portion under the unusual situation.Thus, can shorten the cycle that second sensor values that alternative sensor detected is sent to compressor control portion, therefore detected by abnormity detection portion under the unusual situation, compressor control portion can suitably control compressor.

And communication control unit communicates from Equipment Control portion through the Equipment Control portion with the control constitution equipment and obtains second sensor values.Under the very many situation of the quantity of Equipment Control portion, need the long period in order to communicate with all devices control part.In this case, the cycle of transmitting second sensor values that alternative sensor detected to compressor control portion is elongated, is being detected by abnormity detection portion under the unusual situation, and compressor control portion can't suitably control compressor.

Therefore, communication control unit is being detected by abnormity detection portion under the unusual situation, the Equipment Control portion that will control constitution equipment with alternative sensor than other Equipment Control portions more preferably as communication object.Thus, can shorten the cycle that second sensor values that alternative sensor detected is sent to compressor control portion, therefore detected by abnormity detection portion under the unusual situation, compressor control portion can suitably control compressor.

In the cooling system that above-mentioned characteristic relates to; Preferred said abnormity detection portion is based on the said coefficient correlation of utilizing correlation function to calculate by said coefficient correlation calculating part; Whether the degree of correlation of judging said first sensor value and said second sensor values is lower than stipulated standard; The situation that said degree of correlation is lower than said stipulated standard detects said unusual as said unusual situation has taken place thus.

According to such cooling system, because first physical quantity and the second physics measurer have substantial connection, so do not exist under the unusual situation in sensor at compressor, the coefficient correlation of first physical quantity and second physical quantity was just higher originally.

Therefore, abnormity detection portion judges whether the degree of correlation of the first sensor value and second sensor values is lower than stipulated standard, and the situation that degree of correlation is lower than stipulated standard with sensor unusual situation has taken place as compressor.Thus, can detect compressor unusual with sensor accurately.

In the cooling system that above-mentioned characteristic relates to; Preferred said compressor control portion controls said compressor; Make the error between the desired value (for example suction pressure desired value) of said first sensor value and said first physical quantity reduce; Said abnormity detection portion judges whether said error has surpassed defined threshold, has surpassed in said error under the situation of said defined threshold, judges that said compressor is said unusual with having taken place in the sensor.

According to such cooling system, compressor control portion controls compressor according to the mode that the error between the desired value that makes the first sensor value and first physical quantity reduces.Therefore, with sensor under the normal situation, it is less that error is held at compressor.On the other hand, taken place at compressor that error increases under the unusual situation in sensor.

Therefore, whether the abnormity detection portion decision errors has surpassed defined threshold, has surpassed in error under the situation of defined threshold, judges that compressor is unusual with having taken place in the sensor.Thus, can detect compressor unusual with sensor accurately.

In the cooling system that above-mentioned characteristic relates to; Preferably also has notice portion (for example display part 15); This notice portion is being detected by said abnormity detection portion under the said unusual situation, detects said unusual message and has selected the message of said alternative sensor with sensor from said constitution equipment to user notification.

According to such cooling system, detecting by abnormity detection portion under the unusual situation, the user can grasp compressor with taken place in the sensor unusual with from constitution equipment with the situation of having selected alternative sensor the sensor.Thus, can impel the user to carry out the reparation of compressor, help compressor is suitably remained in operation with sensor.

The control device that characteristic of the present invention relates to (for example ICU 10) is used for control: cold-producing medium is carried out compressor for compressing (compressor 51); (for example showcase 53,54,55 with at least one constitution equipment ...), it is that equipment and the said compressor different with said compressor constitutes refrigerant circulation loop together.Said control device possesses: abnormity detection portion (abnormity detection portion 13); Its detection compressor is unusual with sensor (for example suction pressure sensor 51d); This compressor is arranged at said compressor with sensor and in the control of said compressor, uses, and detects first physical quantity as the physical quantity of said cold-producing medium; With control data generation portion (control data generation portion 16); It is being detected by said abnormity detection portion under the said unusual situation; The constitution equipment that utilization detects second physical quantity generates the control data that is used to control said compressor with the value of sensor; Said constitution equipment is with sensor (for example temperature sensor 53b, 54b, 55b ...) be the sensor that is arranged at said constitution equipment, said second physical quantity be receive the influence of said first physical quantity or said first physical quantity is exerted an influence have the physical quantity of substantial connection with said first physical quantity.

According to such control device, can play cooling system same effect and the effect related with above-mentioned characteristic of the present invention.

The control program that characteristic of the present invention is related makes as the computer of control device (for example ICU 10) performance function and carries out following steps, and said control device is used for control: cold-producing medium is carried out compressor for compressing (compressor 51); (for example showcase 53,54,55 with at least one constitution equipment ...), it is that equipment and the said compressor different with said compressor constitutes refrigerant circulation loop together; Said step is: detect the unusual step of compressor with sensor, this compressor is arranged at said compressor with sensor and in the control of said compressor, uses, and detects first physical quantity as the physical quantity of said cold-producing medium; With detecting under the said unusual situation through said detection step; The constitution equipment that utilization detects second physical quantity generates the step of the control data that is used to control said compressor with the value of sensor; Said constitution equipment is the sensor that is arranged at said constitution equipment with sensor, said second physical quantity be receive the influence of said first physical quantity or said first physical quantity is exerted an influence have the physical quantity of substantial connection with said first physical quantity.

According to such control program, can play cooling system same effect and the effect related with above-mentioned characteristic of the present invention.

(invention effect)

According to the present invention; Can provide under a kind of situation that a plurality of sensors are not set in compressor, the cooling system, control device and the control program that come suitably to make compressor to remain in operation through the sensor that utilizes other equipment when unusual have taken place in the sensor that also can in compressor, be provided with.

Description of drawings

Fig. 1 is the whole summary pie graph of the cooling system of first embodiment of the invention.

Fig. 2 is the figure of communication mode that is used to explain ICU and the device controller of first embodiment of the invention.

Fig. 3 is the functional block pie graph of the ICU of first embodiment of the invention.

Fig. 4 is the table pie graph of the priority/priority sequence table that communication control unit kept of first embodiment of the invention.

Fig. 5 is expression is detected the communication sequence under the unusual situation of suction pressure sensor generation by the abnormity detection portion of first embodiment of the invention a concept map.

Fig. 6 is expression to the message pie graph of the form of the request message of the showcase controller of first embodiment of the invention and response message.

Fig. 7 is the figure of the display frame that display part the showed example of expression first embodiment of the invention.

Fig. 8 is the flow chart of action of the ICU of expression first embodiment of the invention.

The sequence chart of the data communication order when Fig. 9 is the related common running of expression first embodiment of the invention.

The sequence chart of the data communication order when Figure 10 is the related emergency operation of expression first embodiment of the invention.

Figure 11 is the functional block pie graph of the ICU of second embodiment of the invention.

Figure i2 is the flow chart of action of the ICU of expression second embodiment of the invention.

Figure 13 is the whole summary pie graph of the cooling system of third embodiment of the invention.

Figure 14 is the functional block pie graph of the ICU of third embodiment of the invention.

Figure 15 is the whole summary pie graph of the cooling system of another embodiment.

Figure 16 is the figure of concrete example of the aftercooler of another embodiment of expression.

Figure 17 is the figure of concrete example of the setting of expression priority/priority.

Figure 18 is used to explain the figure to the application examples of the present invention of air-conditioning system.

Figure 19 is used to explain the figure from showcase controller transmission data according to other embodiment.

Among the figure: the 1-cooling system; The 10-ICU; 11-communication I/F portion; The 12-communication control unit; The 13-abnormity detection portion; 14-alternative sensor selection portion; 19-apparatus settings portion; The 15-display part; 16-control data generation portion; The 17-input part; 18-coefficient correlation calculating part; The 20-compressor controller; The 30-condenser controller; 40a, 40b, 40c-showcase controller; The 41a-sensor; The 51-compressor; 51a～51c-compressor; The 51d-sensor; 51d-suction pressure sensor; The 52-condenser; 52a～52c-fan; 53,54,55-showcase; 53a, 53b, 53c-expansion valve; 53b, 54b, 55b-temperature sensor; 53e, 54e, 55e-flow regulator; The 70-aftercooler; 70a, 70b-sensor; The 70b-sensor; The 70c-valve; The 70d-expansion valve; The 70e-evaporator unit; The 70f-evaporimeter; 80-aftercooler controller; 80,90-heat exchanger; The 80b-temperature sensor; The 95-expansion valve; The 101-network; 102-remote monitoring server.

The specific embodiment

Below, with reference to accompanying drawing, embodiment of the present invention is described.In the record of the accompanying drawing of following embodiment, to identical or the identical or similar mark of similar portions mark.And, in the first following embodiment～the 3rd embodiment, system's formation of the commodity in the middle showcases that are provided with such as shop being carried out freezer is described.

[first embodiment]

In this embodiment, according to the whole summary of (1) cooling system constitute, the order of action, (4) effect and the effect of the formation of (2) ICU, (3) ICU describes.

(1) the whole summary of cooling system constitutes

At first, utilize Fig. 1 and Fig. 2, the whole summary of the cooling system of this embodiment is constituted describe.Fig. 1 is the whole summary pie graph of the cooling system 1 of this embodiment.

In this embodiment, the formation with the remote monitoring server 102 that communicates through the ICU 10 that is provided with among network 101 and a plurality of shop S is described.Remote monitoring server 102 obtains various data from ICU 10, and sends and set various data to ICU 10.

(1.1) refrigerant circulation loop

In the S of shop, be provided with have compressor 51, condenser 52, showcase 53,54,55 ..., and the refrigerant circulation loop of refrigerant piping P.In this embodiment, compressor 51, condenser 52, showcase 53,54,55 ... Each be the constitution equipment that constitutes refrigerant circulation loop, be communicated with through refrigerant piping P.

Compressor 51 has three different compressor 51a～51c of compressed capability and suction pressure sensor 51d (compressor is used sensor).The pressure of the cold-producing medium that suction pressure sensor 51d detection compressor 51a～51c is sucked is suction pressure (first physical quantity).

In addition, below the formation of utilizing suction pressure sensor 51d is described, but also instead suction pressure sensor 51d, use the inlet temperature sensor of the temperature that detects the cold-producing medium that compressor 51a～51c sucked to use sensor as compressor.Perhaps; Replace suction pressure sensor 51d, arbitrary side of the ejection temperature sensor of the temperature of the cold-producing medium that the ejection pressure sensor of the pressure of the cold-producing medium that use detection compressor 51a～51c is sprayed or detection compressor 51a～51c are sprayed uses sensor as compressor.

Cold-producing medium by after compressor 51 compressions imports in the condenser 52 via refrigerant piping P.Condenser 52 has fan 52a～52c, utilizes fan 52a～52c that cold-producing medium is carried out condensation.Import to showcase 53,54,55 by condenser 52 condensed cold-producing mediums through refrigerant piping P ... In.

Showcase 53 has expansion valve 53a, temperature sensor 53b and evaporimeter 53c.The cold-producing medium that expands at expansion valve 53a gasifies in evaporimeter 53c, the heat in the storehouse of absorption showcase 53.Have, expansion valve 53a also has the function of the flow of regulating cold-producing medium again.Cold-producing medium after the gasification imports in the compressor 51 via refrigerant piping P once more, and cold-producing medium circulates like this, thus cooling showcase 53,54,55 ... In the commodity taken in.

Temperature sensor 53b detects the storehouse temperature of showcase 53.Perhaps, temperature sensor 53b detects the temperature of the cold-producing medium that flows in the showcase 53.Below, the temperature of cold-producing medium mobile in the storehouse temperature in the showcase 53 and the showcase 53 is generically and collectively referred to as " showcase temperature (second physical quantity) ".Here, the suction pressure of showcase temperature and compressor 51 has substantial connection.That is, the suction pressure of compressor is low more, and the showcase temperature is also low more.But, also instead temperature sensor 53b uses the sensor of the pressure that detects the cold-producing medium that flows in the showcase 53.

Like this; If establishing the suction pressure or the inlet temperature of compressor 51 is first physical quantity; Then conduct and first physical quantity have second physical quantity of substantial connection, can enumerate the pressure of the cold-producing medium that flows in temperature or the showcase 53 of the cold-producing medium that flows in storehouse temperature in the showcase 53, the showcase 53 etc.

Showcase 54,55 ... Likewise constitute with showcase 53.In addition, in Fig. 1, only illustrate three showcases, but the scale according to shop S can be provided with a plurality of showcases in the reality.

In addition, in this embodiment, explanation can be tackled the mode that unusual situation such as fault has taken place among the suction pressure sensor 51d.

(1.2) controller

In the S of shop, be provided with various controllers.Particularly, in the S of shop, be provided with compressor controller 20, the condenser controller 30 of control condenser 52, the control showcase 53,54,55 of control compressor 51 ... Showcase controller 40a, 40b, 40c and ICU 10.Below, with compressor controller 20, condenser controller 30, showcase controller 40a, 40b, 40c ... Suitably be generically and collectively referred to as " device controller ".

Compressor controller 20 control compressors 51 make error reduction between the desired value (below be called " suction pressure desired value ") of the sensor values that suction pressure sensor 51d exported (below be called " suction pressure sensor values ") and suction pressure.In addition, compressor controller 20 also has the function that gives the alarm when error between suction pressure sensor values and suction pressure desired value surpasses setting.

Wherein, use under the situation of inlet temperature sensor replacing suction pressure sensor 51d, the sensor values that compressor controller 20 is exported based on this inlet temperature sensor is controlled compressor 51.

Showcase controller 40a, 40b, 40c ... Based on temperature sensor 53b, 54b, 55b ... The sensor values of being exported (below be called " temperature sensor value ") is controlled showcase 53,54,55 ... (be specially expansion valve 53a, 53b, 53c ...).In addition, showcase controller 40a, 40b, 40c ... Also has the function that gives the alarm when error between the desired value of temperature sensor value and showcase temperature surpasses setting.

Showcase controller 40a, 40b, 40c ... General and showcase 53,54,55 ... Be provided with correspondingly, but also can be that a showcase controller is controlled a plurality of showcases.

ICU 10 is carried out the intercommunication mutually with device controller, and the operational situation of integrated management constitution equipment etc. realize the cooperation between each constitution equipment.For example, ICU 10 has the function of implementing the whole Energy Saving Control of shop S etc.And ICU 10 is also carried out the intercommunication mutually with remote monitoring server 102.

(1.3) communication form of ICU and device controller

Fig. 2 is the figure that is used to explain ICU 10 and the communication form of device controller.

As shown in Figure 2, ICU 10 communicates via single conveyer line L with device controller each other.In this embodiment, adopt with ICU 10 be master, with device controller be from the communication mode of master-slave mode.

ICU 10 communicates with each device controller through polling method (polling) successively.Particularly, ICU 10 is through polling method, carries out the setting that the obtaining of various sensor values, constitution equipment and device controller are controlled employed control data.Because ICU 10 communicates with each device controller successively, therefore under the situation that many (for example about 50) device controllers are set, to need the long period till each device controller completion is communicated by letter.

In this embodiment, explain and in suction pressure sensor 51d, taken place under the unusual situation such as fault that ICU 10 utilizes from showcase controller 40a, 40b, 40c ... The temperature sensor value of obtaining is carried out the formation of emergency operation.

In addition, be not limited to ICU 10 and the formation of device controller, also can adopt ICU 10 and device controller through the wireless formation that communicates through wired connection.

(2) formation of ICU

Below, utilize Fig. 3～Fig. 7, the formation of ICU 10 is described.ICU 10 utilizes at least one computer with CPU and memory etc. to constitute.

(2.1) functional block of ICU constitutes

Fig. 3 is the functional block pie graph of ICU 10.In addition, serve as main describing with the part relevant below with the present invention.

As shown in Figure 3, ICU 10 has: communication interface part (below be called communication I/F portion) 11, communication control unit 12, coefficient correlation calculating part 18, abnormity detection portion 13, alternative sensor selection portion 14, display part 15, control data generation portion 16.

Be connected with conveyer line L in the communication I/F portion 11.The interface performance function of 11 conducts of communication I/F portion and device controller, and be the interface with network 101.Communication control unit 12 communicates with conveyer line L and each device controller through communication I/F portion 11.

Coefficient correlation calculating part 18 is to each temperature sensor 53b, 54b, 55b ..., utilize the correlation function of the dependency relation of expression suction pressure sensor values and temperature sensor value to calculate coefficient correlation.

Abnormity detection portion 13 utilizes coefficient correlation to detect the unusual of suction pressure sensor 51d.Particularly; Abnormity detection portion 13 is based on the coefficient correlation of being calculated by coefficient correlation calculating part 18; Whether the degree of correlation of judging suction pressure sensor values and temperature sensor value is lower than stipulated standard; Be lower than in this degree of correlation under the situation of stipulated standard, be regarded as in suction pressure sensor 51d, having taken place unusual.

Alternative sensor selection portion 14 is under the unusual situation that has been detected suction pressure sensor 51d by abnormity detection portion 13; Utilize the coefficient correlation of suction pressure sensor values and temperature sensor value, from temperature sensor 53b, 54b, 55b ... The middle alternative sensor of selecting replacement suction pressure sensor 51d in the control of compressor 51, to use.

In this embodiment; Alternative sensor selection portion 14 is based on the coefficient correlation of being calculated by coefficient correlation calculating part 18; From temperature sensor 53b, 54b, 55b ... Middle selection detects temperature sensor 53b, 54b, the 55b with the maximally related temperature sensor value of suction pressure sensor values ..., as alternative sensor.

Control data generation portion 16 generates the control data that sends and set to device controller.And; Control data generation portion 16 is under the unusual situation that has been detected suction pressure sensor 51d by abnormity detection portion 13; Based on temperature sensor value, generate the offset (below be called " suction pressure sensor compensation value ") of suction pressure sensor values from alternative sensor selection portion 14 selected alternative sensor.And communication control unit 12 sends and sets suction pressure sensor compensation value via communication I/F portion 11, and compressor 51 is controlled.

In this embodiment; Control data generation portion 16 or compressor controller 20 are as following compressor control portion performance function; That is, when turning round usually, utilize suction pressure sensor 51d that compressor 51 is controlled, under the unusual situation that has detected suction pressure sensor 51d by abnormity detection portion 13; Replace suction pressure sensor 51d, utilize temperature sensor 53b, 54b, 55b ... Compressor 51 is controlled.

Communication control unit 12 is through polling method and showcase controller 40a, 40b, 40c ... Communicate, thus from showcase controller 40a, 40b, 40c ... Obtain temperature sensor value.

Communication control unit 12 is under the unusual situation that has been detected suction pressure sensor 51d by abnormity detection portion 13; At showcase controller 40a, 40b, 40c ... In, make showcase controller that the showcase with alternative sensor is controlled than other showcase controllers more preferably as communication object.

And then; Communication control unit 12 is under the unusual situation that has been detected suction pressure sensor 51d by abnormity detection portion 13; More preferably obtain the significant data of the temperature sensor value that comprises that alternative sensor detects than common data, said common data comprise the temperature sensor value that other temperature sensors detect.

Display part 15 under the unusual situation that has detected suction pressure sensor 51d by abnormity detection portion 13 as notice portion performance function, to user notification detected unusual message, from temperature sensor 53b, 54b, 55b ... In the sensor compensation value having selected the message of alternative sensor, generated by control data generation portion 16.But, be not limited to situation about notifying to the user, also can notify to the user through sound etc. through showing.

(2.2) abnormality detection is handled and alternative sensor selection processing

Below, the abnormality detection processing of being carried out by abnormity detection portion 13 is elaborated.

Communication control unit 12 is kept watch on showcase 53,54,55 ... In the having or not of defrosting, extract the sensor values of each temperature sensor of the showcase that defrosts.Here, defrosting is to instigate showcase temporarily to shut down, and removes the frost that adheres on the showcase.

Coefficient correlation calculating part 18 is asked for the degree of correlation of suction pressure sensor values of temperature sensor value and suction pressure sensor 51d of each temperature sensor of the showcase that defrosts.For example, when in 10 showcases 3 have carried out defrosting,, calculate the coefficient correlation and the regression straight line of up-to-date 100 data (n=100) etc. to the temperature sensor of all the other 7 showcases.

Here, be x if establish a up-to-date n temperature sensor value to each temperature sensor of the showcase that defrosts _n, up-to-date n suction pressure sensor values establishing suction pressure sensor 51d be y _n, then as shown in the table.

[table 1]

	1	2	3	…	n
						Temperature sensor	x 1	x 2	x 3	…	x n
The suction pressure sensor	y 1	y 2	y 3	…	y n

Correlation coefficient r for example utilizes following formula (1) to calculate.

[mathematical expression 1]

$r=\frac{\underset{i=1}{\overset{n}{\mathrm{\Σ}}}(x_i-m_x)(y_i-m_y)}{\sqrt{\underset{i=1}{\overset{n}{\mathrm{\Σ}}}{(x_i-m_x)}^2\underset{i=1}{\overset{n}{\mathrm{\Σ}}}{(y_i-m_y)}^2}}$ (wherein, m _xM _yBe respectively the mean value of xy)

…(1)

The regression straight line y of this moment representes with following formula (2).

y＝ax+b …(2)

In formula (2), " a " representes with following formula (3).

[mathematical expression 2]

$a=\frac{\underset{i=1}{\overset{\mathrm{<figure-callout\; id="2"\; label="n\; x\; i"\; filenames="H2009100026960E00041.png,H2009100026960E00051.png"\; state="\{\{state\}\}">n</figure-callout>}}{\mathrm{\&Sigma;}}}{x}_i^{}{}_2^{}\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{y}_i^2-\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{x}_i\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{x}_i{y}_i}{n\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{x}_i^2-{\left(\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{x}_i\right)}^2},$ $b=\frac{n\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{x}_i{y}_i-\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{x}_i\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{y}_i}{n\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{x}_i^2-{\left(\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{x}_i\right)}^2}\&CenterDot;\&CenterDot;\&CenterDot;\left(3\right)$

Utilize above-mentioned formula (1)～formula (3), coefficient correlation calculating part 18 is calculated correlation coefficient r and regression straight line y.

Abnormity detection portion 13 will be compared by correlation coefficient r and the stipulated standard (for example, 0.9) that coefficient correlation calculating part 18 is calculated by each temperature sensor.Abnormity detection portion 13 is lower than under the situation of stipulated standard at the correlation coefficient r to each temperature sensor, is judged to be to have taken place among the suction pressure sensor 51d unusually.

Taken place among the suction pressure sensor 51d unusually if be judged to be, then alternative sensor selection portion 14 utilizes correlation coefficient r, selects maximally related temperature sensor as alternative sensor in each temperature sensor of the showcase that never defrosts.

After selecting alternative sensor, the suction pressure sensor values of suction pressure sensor 51d calculates in control data generation portion 16 according to the temperature sensor value of alternative sensor.Particularly, control data generation portion 16 utilizes the regression straight line y corresponding with alternative sensor, will be transformed to suction pressure sensor values offset from the temperature sensor value x that alternative sensor is newly obtained.That is, the sensor values x that newly obtains from alternative sensor through substitution to formula (2), thus calculate suction pressure sensor compensation value.

The suction pressure sensor compensation value that communication control unit 12 is calculated to compressor controller 20 transmissions and setting.And the instruction that compressor controller 20 is accepted from communication control unit 12 has produced under the unusual situation in being judged as suction pressure sensor 51d, utilizes the suction pressure sensor compensation value that is received that compressor 51 is controlled.

(2.3) data communication is handled

Below, the data communication processing of being carried out by communication control unit 12 is described.

As stated, ICU 10 is connected through single conveyer line L with device controller, and therefore, the phase can only communicate with a device controller ICU 10 at the same time.So communication control unit 12 is provided with priority and preferred sequence to communicate by each device controller and then by wherein each data items.

This set the communicating by letter with only in suction pressure sensor 51d, having produced when unusual situation is emergency operation and carry out of priority and preferred sequence, but also can when running usually, use.

Fig. 4 is the table pie graph of priority/priority sequence table of being kept of communication control unit 12.

In Fig. 4, the more little expression priority/priority of numeral is high more.In addition, priority/priority sequence table can be set arbitrarily and change by the user.Concrete example about priority/priority sequence table is narrated in the back.

Communication control unit 12 carries out poll by priority/priority sequence table shown in Figure 4.Wherein, be 1 project about priority, only under the unusual situation that detects suction pressure sensor 51d by abnormity detection portion 13, use.That is, when common running, not using priority is 1 project.

In priority is projects of 1, stipulated temperature sensor value that alternative sensor is exported obtain and to the setting of the suction pressure sensor compensation value of compressor controller 20.Detected by abnormity detection portion 13 under the unusual situation of suction pressure sensor 51d, 12 pairs of priority of communication control unit are that projects of 1 are preferentially carried out poll, thereby compressor 51 is remained in operation.

Fig. 5 is illustrated in the concept map that is detected the communication sequence under the unusual situation of suction pressure sensor 51d by abnormity detection portion 13.

As shown in Figure 5, communication control unit 12 carries out poll by priority/priority sequence table shown in Figure 4.Particularly, the project from priority 1/priority 1 begins to carry out poll.Then, the project of priority 1/priority 2 is carried out poll.If accomplished priority is the poll of whole projects of 1, and then to carry out priority be that priority is the poll of 1 project in 2 to communication control unit 12.

If accomplished priority and be priority in 2 and be the poll of 1 project, then communication control unit 12 carries out the poll that priority is projects of 1 once more.Then, be that 2 priority is that 2 project is carried out poll to priority.Then, communication control unit 12 is if to have accomplished priority be the poll of whole projects of 2, is that 3 priority is that 3 project is carried out poll to priority then.Like this, communication control unit 12 carries out poll according to priority/priority, and carries out repeatedly.

Fig. 6 is the message pie graph of expression to the form of the request message of showcase controller and response message.Communication control unit 12 utilizes the message of form as shown in Figure 6 to carry out poll.

Request message format shown in Fig. 6 (a1) is used when turning round usually, has the field of storage request command (being 0x05 here) and the field of the storage total data request of obtaining (being 0x03) here.

Response message format shown in Fig. 6 (a2) uses when turning round usually, has the field 1～59 of storing temperature sensor values and the field 60～100 of storage data with alert.The data with alert for example situation etc. that surpassed setting of the error between the desired value of temperature sensor value and showcase temperature is used down.In the response message format shown in Fig. 6 (a2), have 100 fields,, each field amounts to 200 bytes when being 2 bytes.That is, when turning round usually, from showcase controller 40a, 40b, 40c ... Response to ICU 10 needs the long period.

Request message format shown in Fig. 6 (b1) is used when emergency operation, has the field of storage request command (being 0x05 here), the field of the storage individual data request of obtaining (being 0x00 here) and the field of storing the identifying information (being the data number of a temperature sensor 3) of alternative sensor here.That is, when emergency operation, can specify and obtain the temperature sensor value of alternative sensor.

Response message format shown in Fig. 6 (b2) uses when emergency operation, has the field of the sensor values of storage alternative sensor.Response message format shown in Fig. 6 (b2) is compared with the response message format shown in Fig. 6 (a2), and data volume reduces significantly.Therefore, when emergency operation, from showcase controller 40a, 40b, 40c ... Response to ICU 10 can be accomplished at short notice.

(2.4) display frame example

Below, the display frame example that is shown by display part 15 is described.Fig. 7 is the routine figure of display frame that expression is shown by display part 15.

As shown in Figure 7; Display part 15 is being detected by abnormity detection portion 13 under the unusual situation of suction pressure sensor 51d, the obtaining the cycle of the identifying information (in Fig. 7, being sensor name) of the alternative sensor of just show message (suction pressure sensor 51d has taken place unusual) in emergency operation, being selected by alternative sensor selection portion 14, the suction pressure sensor compensation value of being calculated by control data generation portion 16 and alternative sensor.In addition, in Fig. 7, also show the identifying information of showcase controller etc. with alternative sensor.

In addition, in remote monitoring server 102 shown in Figure 1, also can show the display frame same with Fig. 7.Under this situation, in that S also can grasp in place far away the unusual of suction pressure sensor 51d apart from the shop.

(3) action of ICU

Below, utilize Fig. 8～Figure 10, the action of ICU 10 is described.

(3.1) action of ICU

Fig. 8 is the flow chart of the action of expression ICU 10.

In step S101, communication control unit 12 carries out poll according to above-mentioned priority/priority.Wherein, carry out that not use priority be the poll of projects of 1.

In step S102, coefficient correlation calculating part 18 is derived coefficient correlation and regression straight line according to formula (1)～formula (3).

In step S103, abnormity detection portion 13 utilizes the coefficient correlation that obtains among the step S102 to judge that suction pressure sensor 51d's is unusual.Then, in step S104, in being judged to be suction pressure sensor 51d, taken place under the unusual situation, handled advancing to step S105.On the other hand, in being judged to be suction pressure sensor 51d, do not take place under the unusual situation, handle turning back to step S101.

In step S105, display part 15 shows that suction pressure sensor 51d unusual message has taken place as abnormality alarm.

In step S106; Alternative sensor selection portion 14 utilizes the coefficient correlation of suction pressure sensor values and temperature sensor value, from temperature sensor 53b, 54b, 55b ... The middle alternative sensor of selecting replacement suction pressure sensor 51d in the control of compressor 51, to use.

In step S107, communication control unit 12 switches in above-mentioned priority/priority and used priority is the poll of projects of 1.

In step S108, unusual message has taken place to compressor controller 20 notices in communication control unit 12.Then, compressor controller 20 makes the control break of the compressor 51 that has utilized suction pressure sensor 51d.

In step S109, communication control unit 12 is according to above-mentioned priority/priority, and making priority is 1 the preferential poll of project.

In step S110, control data generation portion 16 is utilized in the regression straight line that obtains among the step S102, calculates suction pressure sensor compensation value.

In step S111, judge whether suction pressure sensor 51d is repaired.Under the situation that suction pressure sensor 51d is repaired, handle advancing to step S112.Under the situation that suction pressure sensor 51d is not repaired, handle turning back to step S109.

In step S112, display part 15 is ended the demonstration of abnormality alarm.In addition, compressor controller 20 has restarted to utilize the control of the compressor 51 of suction pressure sensor 51d.

(3.1) data communication action

Then, the data communication order of carrying out between ICU 10 and the device controller is described.

Data communication action when (3.1.1) turning round usually

Fig. 9 is the sequence chart of the data communication order when representing running usually.Here, ICU 10 is described with the situation that each device controller communicates successively.

In step S201, ICU 10 sends the request message of request temperature sensor value (instrumentation data) to showcase controller 40a.Showcase controller 40a sends response message to ICU 10.

In step S202, ICU 10 sends the request message of the setting of request control data to showcase controller 40a.Showcase controller 40a sends response message to ICU 10.

At this moment, utilized the response message format shown in Fig. 6 (a2), the processing of step S201 and step S202 needs about 1s.

After step S203, ICU 10 carries out poll to remaining device controller.As a result, till accomplishing, need the long period to the poll of all devices controller.

Data communication action when (3.1.2) taking place usually

The sequence chart of the data communication order when Figure 10 is the expression emergency operation.Here, the situation that the sensor in the showcase of showcase controller 40a being controlled is selected as alternative sensor describes.

In step S301, ICU 10 sends the request message of request temperature sensor value (instrumentation data) to showcase controller 40a.Showcase controller 40a sends response message to ICU 10.At this moment, utilized the response message format shown in Fig. 6 (b2), the processing of step S301 is accomplished at short notice.

In step S302, ICU 10 sends the request message of the setting of request control data (suction pressure sensor compensation value) to compressor controller 20.Compressor controller 20 sends response message to ICU 10.

In addition, to handle be to be equivalent to the processing that above-mentioned priority is projects of 1 for each of step S301 and step S302.

In step S303, ICU 10 sends the request message of request temperature sensor value (instrumentation data) to showcase controller 40b.Showcase controller 40b sends response message to ICU 10.At this moment, utilized the response message format shown in Fig. 6 (a2).

In step S304 and step S305, carry out once more and be equivalent to the processing that priority is projects of 1.

In data communication order shown in Figure 10; Owing to do not rely on the platform number of device controller; In the short period, carry out alternative sensor temperature sensor value obtain the setting with suction pressure sensor compensation value; Therefore, when emergency operation, compressor controller 20 can suitably be controlled compressor 51.

(4) effect and effect

According to this embodiment; Control data generation portion 16 or compressor controller 20 are being detected by abnormity detection portion 13 under the unusual situation of suction pressure sensor 51d; Replace suction pressure sensor 51d, utilize showcase 53,54,55 ... Middle temperature sensor 53b, 54b, the 55b that is provided with ... In any control compressor 51 as alternative sensor.Therefore, unusually compressor 51 is suitably remained in operation even take place among the suction pressure sensor 51d.

In addition, need not a plurality of sensors are set in compressor 51, the system scale that can avoid causing because of compressor 51 increases.And the sensor that in compressor 51, is provided with has only under the unusual situation of generation among suction pressure sensor 51d and the suction pressure sensor 51d, also can control compressor 51, and compressor 51 is suitably remained in operation.

And then; Owing in suction pressure sensor 51d, taken place under the unusual situation; Can use the showcase of both having deposited 53,54,55 ... The middle temperature sensor 53b, 54b, the 55b that had both deposited that is provided with ... Control compressor 51; Therefore, need not to append new sensor, and can tackle among the suction pressure sensor 51d unusual situation has taken place.

According to this embodiment, alternative sensor selection portion 14 utilizes the coefficient correlation of suction pressure sensor values and temperature sensor value, from temperature sensor 53b, 54b, 55b ... The middle alternative sensor of selecting.Therefore, can be from a plurality of temperature sensor 53b, 54b, 55b ... In, select the alternative sensor that the high showcase temperature of suction pressure degree of correlation that is detected with suction pressure sensor 51d is detected.

According to this embodiment; Communication control unit 12 under the unusual situation that has detected suction pressure sensor 51d by abnormity detection portion 13, make showcase controller that the showcase with alternative sensor is controlled than other showcase controllers more preferably as communication object.Thus, can shorten the cycle of obtaining the temperature sensor value that detects by alternative sensor, so control data generation portion 16 or compressor controller 20 can suitably be controlled compressor 51.

According to this embodiment; Communication control unit 12 is under the unusual situation that has been detected suction pressure sensor 51d by abnormity detection portion 13; More preferably obtain the significant data of the temperature sensor value that comprises that alternative sensor detects than common data, said common data comprise the temperature sensor value that other temperature sensors detect.Thus, can shorten the cycle of obtaining the temperature sensor value that detects by alternative sensor, so control data generation portion 16 or compressor controller 20 can suitably be controlled compressor 51.

In addition, to be not limited to from the showcase controller be the temperature sensor value that alternative sensor detects to the data that ICU 10 sends to significant data.For example, be that the sensor compensation value that control data generation portion 16 is generated also is equivalent to significant data from ICU 10 to the data that compressor controller 20 sends.

According to this embodiment; Detecting by abnormity detection portion 13 under the unusual situation of suction pressure sensor 51d; Through display frame as shown in Figure 7, the user can grasp that suction pressure sensor 51d has taken place unusually and from a plurality of temperature sensor 53b, 54b, 55b ... In selected the situation of alternative sensor.Therefore, can impel the user to carry out the reparation of suction pressure sensor 51d, help to make compressor 51 suitably to remain in operation.

[variation 1 of first embodiment]

As stated, compressor controller 20 is controlled compressor 51 according to the mode of the error reduction of the desired value that makes suction pressure sensor values and suction pressure.Therefore, under the normal situation of suction pressure sensor 51d, it is less that error is held.On the other hand, in suction pressure sensor 51d, taken place under the unusual situation, error increases and can not keep lessly.

In this variation, whether abnormity detection portion 13 decision errors have surpassed defined threshold, have surpassed in error under the situation of defined threshold, judge among the suction pressure sensor 51d to have taken place unusually.Thus, can detect the unusual of suction pressure sensor 51d accurately.

Here, abnormity detection portion 13 also can come decision errors whether to surpass defined threshold based on the alarm from compressor controller 20.

[variation 2 of first embodiment]

In the first above-mentioned embodiment, control data generation portion 16 calculating suction pressure sensor compensation values have been described, and suction pressure sensor compensation value have been sent and has been set to an example of compressor controller 20 by communication control unit 12.

But, also can realize following control.Particularly, communication control unit 12 also can send the desired value of temperature sensor value of newly obtaining from alternative sensor and showcase temperature and be set to the compressor controller 20.Under this situation, the temperature sensor value that compressor controller 20 receives according to making is controlled compressor 51 with the mode of the error reduction of the desired value that is received.

Therefore,, can omit the calculating of suction pressure sensor compensation value, so can alleviate the load of ICU 10 according to this variation.

[variation 3 of first embodiment]

In the first above-mentioned embodiment, explained that control data generation portion 16 utilizes regression straight line to calculate an example of suction pressure sensor compensation value.But, be not limited to utilize regression straight line to calculate suction pressure sensor compensation value, table also capable of using is transformed into suction pressure sensor compensation value with the temperature sensor value of alternative sensor.

Particularly, control data generation portion 16 can utilize the table of the historical record of just often temperature sensor value and suction pressure sensor values, obtains suitable suction pressure sensor compensation value.

[second embodiment]

In this embodiment, to selecting constituting of alternative sensor to describe by the user.And, in this embodiment, omit the explanation that repeats with above-mentioned first embodiment.

Figure 11 is the functional block pie graph of the ICU 10 that relates to of this embodiment.Shown in figure 11, ICU 10 has the input part 17 of acceptance from user's input.

Figure 12 is the flow chart of the action of the ICU 10 that relates to of this embodiment of expression.

In step S401, display part 15 demonstrations have detected unusual message.

In step S401, display part 15 also shows the message that is in the emergency operation enforcement.

In step S402, display part 15 shows the identifying information of the alternative sensor of being selected by alternative sensor selection portion 14.Here, but display part 15 displays temperature sensor 53b, 54b, 55b ... Tabulation, carry out the change of alternative sensor to impel the user.Particularly can be, display part 15 not only shows the message of having selected alternative sensor, also asks the user to confirm whether can be this sensor, impels the user to approve or changes to the input of other sensors etc.

In step S403, the change indication of whether input part 17 having been imported alternative sensor is judged by alternative sensor selection portion 14.Under the situation of the change indication of having imported alternative sensor, handle advancing to step S404.

In step S404, alternative sensor selection portion 14 switches to the emergency operation that has utilized by the alternative sensor of user's appointment.After step S402 in, display part 15 shows the message of the alternative sensor that has changed to the user and imported.

In step S405, carry out the emergency operation that has utilized sensor after changing.

Like this, according to this embodiment, the user can change alternative sensor.

[the 3rd embodiment]

Below, the 3rd embodiment of the present invention is described.In this embodiment, omit the explanation that repeats with above-mentioned first embodiment.

(1) the whole summary of cooling system constitutes

Figure 13 is the whole summary pie graph of the cooling system that relates to of this embodiment.In addition, in Figure 13, omitted the diagram of remote monitoring server 102 grades shown in Figure 1.

Shown in figure 13, in the cooling system that this embodiment relates to, at showcase 53,54,55 ... In, be provided with temperature sensor 53d, 54d, the 55d of the temperature that detects cold-producing medium ... With flow regulator 53e, 54e, 55e ...ICU 10 is from showcase controller 40a, 40b, 40c ... Obtain temperature sensor 53d, 54d, 55d ... The sensor values of being exported.Therefore, temperature sensor 53d, 54d, 55d ... The candidate who can be used as alternative sensor.

Flow regulator 53e, 54e, 55e ... Through being adjusted in showcase 53,54,55 ... In the refrigerant amount that flows, thereby even be that identical refrigerant piping P also can be by showcase 53,54,55 ... Be made as different storehouse temperatures.As flow regulator 53e, 54e, 55e ... But, working pressure adjuster or electric expansion valve.

ICU 10 is from showcase controller 40a, 40b, 40c ... Obtain expression flow regulator 53e, 54e, 55e ... In the information (below be called " regulated quantity information ") of regulating degree of refrigerant flow.

Showcase 53,54,55 ... In the refrigerant amount that flows few more, the temperature of each showcase (refrigerant temperature, storehouse temperature) is high more, therefore temperature sensor value capable of using is as regulated quantity information.Perhaps, at flow regulator 53e, 54e, 55e ... Have under the situation of valve, the aperture of this valve capable of using is as regulated quantity information.

Perhaps, setting flow regulator 53e, 54e, 55e by ICU 10 ... The situation of regulated quantity under, this setting value capable of using is as regulated quantity information.

(2) functional block of ICU constitutes

Figure 14 is the functional block pie graph of the ICU 10 that relates to of this embodiment.

Shown in figure 14, the ICU 10 that this embodiment relates to also has the selected portion 19 of equipment.

Communication control unit 12 obtains above-mentioned regulated quantity information.The selected portion 19 of equipment is based on regulated quantity information, from showcase 53,54,55 ... In selected to have the degree that storehouse temperature is regulated be the showcase of the flow regulator of optimum value.

Here, optimum value is according to flow regulator 53e, 54e, 55e ... Formation and predetermined value.For example, utilizing flow regulator 53e, 54e, 55e ... Under the situation of the aperture of valve separately as regulated quantity information, optimum value can be made as 100% or 80% such value.Perhaps, under the situation of utilizing temperature sensor value as regulated quantity information, the value of the littler value or the temperature of preset range becomes optimum value.In this embodiment, the selected portion 19 of equipment is used for the minimum showcase of selected storehouse temperature or has the showcase of the storehouse temperature of preset range.

As an example, under the situation of temperature sensor value of using storehouse temperature, can obtain following data as regulated quantity information.

Showcase A:-2 ℃

Showcase B:-2 ℃

Showcase C:-5 ℃

Showcase D:-3 ℃

Showcase E:-5 ℃

Showcase F:-5 ℃

Here, flow regulator 53e, 54e, 55e ... In the aperture of valve big more, storehouse temperature is low more.That is, the showcase that storehouse temperature is low more, flow regulator 53e, 54e, 55e ... In the aperture of valve big more, high more with the degree of correlation of suction pressure.Therefore, the selected portion of the equipment 19 selected minimum showcases of storehouse temperature are showcase C, E, F.Perhaps, for example be under one 6 ℃～-4 ℃ the situation in the temperature of preset range, selected equally showcase C, E, F.

In each temperature sensor that alternative sensor selection portion 14 sets from the selected showcase C of the selected portion of equipment 19, E, F, utilize the processing of explaining in the first embodiment to confirm alternative sensor.

Like this, through the showcase that becomes the object of selecting alternative sensor is limited, can realize the selection of more appropriate alternative sensor.In addition, be not only the selection of alternative sensor, in the abnormality detection of being undertaken by abnormity detection portion 13 is handled, can also become the showcase of the object that calculates coefficient correlation, improve the abnormality detection precision through qualification.

(4) effect and effect

According to this embodiment, communication control unit 12 obtains temperature sensor value as regulated quantity information.That is, flow regulator 53e, 54e, 55e ... In the aperture of valve big more, storehouse temperature is low more, the degree of correlation of suction pressure and storehouse temperature is high more.

Therefore, the selected portion 19 of equipment is from showcase 53,54,55 ... In selected storehouse temperature be the showcase of optimum value, particularly, the showcase that selected storehouse temperature is minimum or have the showcase of the storehouse temperature of preset range.Selected showcase is at showcase 53,54,55 ... In have and the maximally related storehouse temperature of suction pressure.

In the temperature sensor that alternative sensor selection portion 14 is provided with from the selected showcase of the selected portion of equipment 19, utilize coefficient correlation to confirm alternative sensor.Therefore, can be from showcase 53,54,55 ... In have with the set temperature sensor of the showcase of the maximally related storehouse temperature of suction pressure in select alternative sensor, can select more suitable alternative sensor.

[other embodiments]

As stated, recorded and narrated the present invention, but the description and the accompanying drawing that constitute this disclosed part should not be construed as and be used to limit the present invention according to embodiment.According to this disclosure, those skilled in the art can understand various alternate embodiments, embodiment and application technology.

(1) variation of refrigerant circulation loop

Above-mentioned refrigerant circulation loop can carry out various changes.Figure 15 is the figure that is used to explain the variation of refrigerant circulation loop.In Figure 15, at condenser 52 and showcase 53,54,55 ... Between, have the aftercooler (subcooler) 70 that is communicated with refrigerant piping P.Aftercooler 70 is used to improve showcase 53,54,55 ... Cooling capacity.In this embodiment, compressor 51, condenser 52, showcase 53,54,55 ... With aftercooler 70 be respectively the constitution equipment that constitutes refrigerant circulation loop.

Aftercooler 70 is by the aftercooler controller of communicating by letter with ICU 10 80 controls.Be provided with sensor 70a, 70b in the aftercooler 70. Sensor 70a, 70b for example detect the temperature of cold-producing medium mobile in the aftercooler 70.ICU 10 obtains the sensor values that sensor 70a, 70b are exported from aftercooler controller 80.Therefore, sensor 70a, 70b can be used as the candidate of alternative sensor.

And, in the ejection side of condenser 52, be provided with the sensor 41a that the ejection pressure of condenser 52 or ejection temperature are detected.ICU 10 obtains the sensor values that sensor 41a is exported from condenser controller 30.Therefore, sensor 41a can be used as the candidate of alternative sensor.

Figure 16 is the figure of the concrete example of expression aftercooler 70.Shown in figure 16, aftercooler 70 is to be used for more requiring the cold-producing medium that the showcase of cooling capacity flows to carry out overcooled device to freezing with other showcases of showcase 55 geometric ratios (for example showcase is used in refrigeration) 53,54.

In the example of Figure 16, aftercooler 70 has valve 70c, expansion valve 70d, evaporator unit 70e and sensor 70b.Valve 70c makes part of refrigerant B enter into expansion valve 70d.Evaporator unit 70e has evaporimeter 70f, comes cooling refrigeration agent A through the heat exchange that has utilized cold-producing medium B.Cooled cold-producing medium A is imported in the showcase 55.And sensor 70b detects the temperature by the cooled cold-producing medium A of evaporator unit 70e.The cold-producing medium B that also can be provided with spraying from evaporimeter 70f in addition, carries out compressor for compressing.

(2) variation of the establishing method of priority/priority

Above-mentioned priority/priority can be set and change by the user.Figure 17 is the figure of concrete example of the setting of expression priority/priority.

The category setting of the commodity that Figure 17 (a) expression is taken in according to showcase the situation of priority/priority.Shown in Figure 17 (a), keep freshness, need the showcase of careful temperature treatment for needs, preferably improve priority.

Figure 17 (b) has represented according to the category setting of device controller the situation of priority/priority.Under the situation of wanting monitors compressor 51 all the time etc., can be shown in Figure 17 (b), improve compressor controller priority, reduce the such setting of priority of condenser controller.

(3) variation of controller

In above-mentioned embodiment, in ICU 10, be provided with abnormity detection portion 13, alternative sensor selection portion 14 and control data generation portion 16.But, also can adopt with each functional block of above-mentioned ICU 10 for example the system that is configured in each device controller of dispersions such as abnormity detection portion 13, alternative sensor selection portion 14 and control data generation portion 16 constitute.

(4) other application examples

In above-mentioned embodiment, explained the commodity in the middle showcases that are provided with such as shop are refrigerated or freezing system's formation.But, also can use the present invention for the air-conditioning system of the air conditioning of the interior space of carrying out shop etc.

Figure 18 is used to explain the figure to the application examples of the present invention of air-conditioning system.In Figure 18, compressor 51, heat exchanger 80,90 and expansion valve 95 are respectively the constitution equipments that constitutes refrigerant circulation loop, are communicated with through refrigerant piping P.In air-conditioning system, cold-producing medium such circulation shown in Figure 18 (a) during cooling operation.On the other hand, the path of cold-producing medium is switched when the warm running of system, and cold-producing medium is such circulation shown in Figure 18 (b).

In the heat exchanger 80 of indoor; Be provided with the temperature sensor 80b that indoor temperature is detected; In the sensor 51d of compressor 51, taken place under the unusual situation, can the temperature sensor 80b that be provided with in the heat exchanger 80 have been used as alternative sensor.

(5) computer program

In addition, can each motion flow of explaining in the above-mentioned embodiment be installed as computer program, make execution such as computer as ICU 10 performance functions.

(6) be used to obtain the modified example of constitution equipment with the method for the measured value of sensor

Figure 19 is used for explaining showcase controller, showcase and at Fig. 1,13, each constitution equipment of 15 and 16 figure with the connection between the sensor.In Figure 19, showcase controller A (40aa), showcase controller B (40bb), and showcase controller C (40cc) is connected to ICU 10.A plurality of constitution equipments are used sensor; Promptly be contained in sensors A (saa) in the showcase 53aa, sensor B (sab) ... with sensor N (san); And be contained in sensors A (sba) in the showcase 53ab, sensor B (sbb) ... with sensor N (sbn), be connected to showcase controller A.A plurality of constitution equipments are used sensor, promptly be contained in sensors A (sca) in the showcase 53bb, sensor B (scb) ... with sensor N (scn), be connected to showcase controller B.A plurality of constitution equipments are used sensor, promptly be contained in sensors A (sda) in the showcase 53cc, sensor B (sdb) ... with sensor N (sdn), be connected to showcase controller C.This constitution equipment for example is arranged on a plurality of temperature sensors and the pressure sensor at showcase place with sensors A-N.

In the case, not only each constitution equipment is sent to ICU 10 with the sensor values of sensors A-N itself, and for a part of constitution equipment with sensors A-N, for example statistical value can be sent to ICU 10.For example average (mean value), changing value (variation value) or standard deviation can be used as statistical value.

More specifically; In the example in Figure 19; From showcase controller A, for the sensors A and each among the sensor B that are contained in a plurality of showcases, the mean value (averaged value) that is used for all the sensors value of these sensors is sent out; And for the for example sensor of sensor N, this is sent out each value under the situation that does not have average (averaging).Thus,, and do not carry out average contrast for sensor values, the data volume that transmits from showcase controller A can descend with it in a lump on average as many.Also can reduce communication frequency from showcase controller A to ICU 10.

From showcase controller B,, only send mean value for each value that is contained in the sensors A-N in the showcase 53bb.Therefore,, only there is an average to be sent out, can reduces the data volume of transmission thus for sensor values.Equally, can reduce communication frequency from showcase controller A to ICU 10.

From showcase controller C, send sensors A each value itself, and on the data volume of sending, do not have the situation of reduction to N.

To in data average, from the viewpoint of the degree of accuracy of average, not only the sensor values of a plurality of sensors is by average simply, and for example can carry out weighted average for each sensor.For example, for more carrying out higher weighting near the sensor values of the refrigerant tubing upper sensor of compressor.

Selection for the calculating that is chosen in mean time; For example, based on being contained in constitution equipment in the showcase with type of sensor (for example temperature sensor and pressure sensor), its intended purposes of sensor (in other words; Whether said its intended purposes is placed on the refrigerant tubing in evaporimeter position before based on it; Be placed on the refrigerant tubing in the position of evaporimeter and then, or be placed on showcase inside), hold the type (for example refrigerator display case and refrigerated display case) of the showcase of sensor; Or hold the preset temperature of the showcase of sensor, sensor groups can be classified; And each group for the sensor of such classification can calculating sensor average.

ICU can adopt suction pressure sensor values and these constitution equipments with the correlation between the average of sensor; And when it confirms the suction pressure sensor abnormality; Selection has the average of maximum correlation as the sensor values that is used for the alternative sensor of suction pressure sensor, and the compressor of the sensor values of said alternative sensor is used in control.

So; The statistical value (for example mean value) that is used for sensor values through transmission; Rather than send the sensor values of all the sensors be connected to the showcase controller, can be reduced in data volume and the communication frequency of communication data between showcase controller and the ICU.

(7) modified example of the system of selection of alternative sensor

For the alternative sensor of suction pressure sensor, can preferably be chosen in constitution equipment nearer on the refrigerant tubing and use sensor apart from the suction pressure sensor.For example; In the example depicted in fig. 13; Through from the group of a plurality of constitution equipments in a plurality of showcases, being extracted on the distance sensor, for example, adopt the sensor values of each sensor and the correlation between the suction pressure sensor values at and then sensor 53d, 54d and the 55d of the position of evaporimeter near compressor or suction pressure sensor 51d with sensor; And be detected when unusual when the suction pressure sensor; The sensor of from the sensor of said extracted, selecting to have correlation most is as alternative sensor, and uses the value of said alternative sensor, can control compressor.

And, be near compressor because the constitution equipment with cold-producing medium minimum pressure can be said to be with sensor, this sensor can be selected as alternative sensor.

So; Through from selecting to be used for the alternative sensor of suction pressure sensor with sensor with sensor or constitution equipment with minimum refrigerant pressure on the distance near the constitution equipment of the suction pressure sensor on refrigerant tubing, can be with higher accuracy selection alternative sensor.

According to the present invention; Cooling system, control device and control program can be provided; Even wherein be not arranged on the compressor place when a lot of sensors, when the sensor that is arranged on the compressor place occurs can continuing suitably operate compressor through the sensor that utilizes other device when unusual.

Like this, the present invention is understood to include at these various embodiments of not putting down in writing etc.Therefore, the present invention is only limited the selected item of the invention of the claims that suitably draw according to this disclosure.

Claims (5)

1. cooling system possesses:

Cold-producing medium is carried out compressor for compressing; With

A plurality of constitution equipments, it is that equipment and the said compressor different with said compressor constitutes refrigerant circulation loop together,

This cooling system also has:

Compressor is used sensor, and its first physical quantity that detects as the physical quantity of said cold-producing medium is used as the first sensor value;

A plurality of constitution equipments are used sensor; It is used to detect second physical quantity as second sensor values, said second physical quantity be receive the influence of said first physical quantity or said first physical quantity is exerted an influence have the physical quantity of substantial connection with said first physical quantity;

Compressor control portion, it utilizes said compressor with sensor said compressor to be controlled when turning round usually; With

Abnormity detection portion, it detects said compressor unusual with sensor,

Said cooling system also possesses the coefficient correlation calculating part, and this coefficient correlation calculating part represents is by the coefficient correlation of each said constitution equipment with the dependency relation of detected said second sensor values of sensor and said first sensor value,

Said cooling system also has alternative sensor selection portion, and this alternative sensor selection portion is being detected by said abnormity detection portion under the said unusual situation, selects to be used to control the alternative sensor of said compressor,

Said compressor control portion is being detected under the said unusual situation by said abnormity detection portion, replaces said compressor and uses sensor, utilizes said alternative sensor that said compressor is controlled,

Wherein, Said alternative sensor is based on the said coefficient correlation of utilizing correlation function to calculate by said coefficient correlation calculating part; Use sensor from said constitution equipment with detecting of selecting the sensor with the constitution equipment of maximally related said second sensor values of said first sensor value

Said cooling system also has:

Governor motion, it is arranged in each said constitution equipment, and said second physical quantity is regulated; With

Equipment is selected portion; The regulated quantity information of the degree size that it is regulated said second physical quantity based on expression, selected from said constitution equipment have a said constitution equipment that the degree that said second physical quantity is regulated is the said governor motion of optimum value.

2. cooling system according to claim 1 is characterized in that,

Said alternative sensor selection portion utilizes the coefficient correlation of being calculated by said coefficient correlation calculating part use correlation function to select said alternative sensor from being arranged on said constitution equipment by the selected said constitution equipment of the selected portion of said equipment with in the sensor.

3. cooling system according to claim 1 is characterized in that,

Said cooling system also has:

Communication control unit, it is sent to said compressor control portion with each said constitution equipment with said second sensor values that sensor detected; With

The a plurality of Equipment Control portion that said constitution equipment is controlled,

Said communication control unit obtains said second sensor values through communicating from said Equipment Control portion with said Equipment Control portion,

Detecting by said abnormity detection portion under the said unusual situation, the said Equipment Control portion that will control said constitution equipment with said alternative sensor than other said Equipment Control portions more preferably as communication object, and,

Said communication control unit is being detected by said abnormity detection portion under the said unusual situation; Extraction comprises the significant data of said second sensor values that said alternative sensor detects; And make said significant data than comprising the common high priority data of other said constitution equipments with said second sensor values that sensor detected; And

The transmitted frequency that makes said significant data more transmits to said compressor control portion on the highland than the transmitted frequency of said common data.

4. cooling system according to claim 1 is characterized in that,

Said abnormity detection portion is based on the said coefficient correlation of utilizing correlation function to calculate by said coefficient correlation calculating part; Whether the degree of correlation of judging said first sensor value and said second sensor values all is lower than stipulated standard; The situation that said degree of correlation all is lower than said stipulated standard detects said unusual as unusual situation has taken place thus.

5. cooling system according to claim 1 is characterized in that,

Said cooling system also has notice portion, and this notice portion is being detected by said abnormity detection portion under the said unusual situation, detects said unusual message and has selected the message of said alternative sensor with sensor from said constitution equipment to user notification.

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