CN207147049U - A kind of intelligent refrigerator monitoring system - Google Patents

Abstract

The utility model belongs to technical field of electric appliances, more particularly to a kind of intelligent refrigerator monitoring system.It can be monitored to the service condition of refrigerator, and controllable refrigerator is opened to given client and used, and strengthens anti-theft feature.Including smart card card reader and the electronic lock being arranged on refrigerator body；The refrigerator body also includes DSP module, GPRS communication module, temperature detecting module, outage detection module and switch module, and the GPRS communication modules are additionally provided with anti-jamming circuit；The DSP module is communicated by GPRS communication modules and Surveillance center, and GPRS signal detection modules are also integrated with the Surveillance center；The DSP module is also connected with smart card card reader, switch module, temperature detecting module and outage detection module respectively, and the switch module is connected with electronic lock.

Description

A kind of intelligent refrigerator monitoring system

Technical field

The utility model belongs to technical field of electric appliances, more particularly to a kind of intelligent refrigerator monitoring system.

Background technology

People need to usually need to move in hotel when going on business, hotel is the demand of moving in for meeting different crowd, indispensable electrical equipment One of i.e. refrigerator；The comfort level for moving in hotel is greatly improved in the preparation of refrigerator, its can meet client do not have to it is outgoing can be in Fresh, nice and cool food is obtained in hotel room.Summer especially suitable for sweltering heat.

But refrigerator is equipped with hotel there is also some problems, one is directly leaves away after client checks out sometimes, and door is not timely Close, cause other people to have an opportunity to enter and checked out to acquirement commodity in refrigerator, and hotel must not to this situation in the hotel in And know.Furthermore also lack corresponding monitoring system to monitor the service condition of refrigerator, remote monitoring end, especially for large-scale company Enterprise and the more hotel of hotel room are locked, service condition and fault message to refrigerator can not quickly be fed back and caused When refrigerator maintenance can't wait.

The content of the invention

The defects of the utility model exists aiming at prior art, there is provided a kind of intelligent refrigerator monitoring system, it can be right The service condition of refrigerator is monitored, and controllable refrigerator is opened to given client and used, and strengthens anti-theft feature.

To achieve the above object, the utility model adopts the following technical scheme that, including the intelligence being arranged on refrigerator body Card card reader and electronic lock.

The refrigerator body also includes DSP module, GPRS communication module, temperature detecting module, outage detection module and opened Module is closed, the GPRS communication modules are additionally provided with anti-jamming circuit；The DSP module passes through GPRS communication modules and monitoring Center is communicated, and GPRS signal detection modules are also integrated with the Surveillance center.

The DSP module also respectively with smart card card reader, switch module, temperature detecting module and outage detection module phase Even, the switch module is connected with electronic lock.

As a kind of preferred scheme of the present utility model, the smart card card reader is CUSTOM HOUSE HOTEL.

As another preferred scheme of the present utility model, the refrigerator is a kind of simple gate ice with cold storage function Case.

As another preferred scheme of the present utility model, described anti-jamming circuit includes two-way Transient Suppression Diode Encapsulation No. 5 of chip SMDA15C, SMDA15C chip, No. 6, No. 7, No. 8 pins connect together, its common intersection and RS485 cores The GND ends of piece are connected, and No. 4 pins of SMDA15C chips are connected with RS485+ signal ends, No. 3 pins connection of SMDA15C chips RS485- signal ends.

As another preferred scheme of the present utility model, the GPRS signal detection modules include being used to gather GPRS letters Number slave computer subsystem and for the slave computer subsystem send AT instruction host computer, the slave computer subsystem bag Include GPRS modulation /demodulation module, the SIM card and Anneta module for carrying out GPRS communication authentications for gathering GPRS signals；Institute State GPRS modulation /demodulation modules respectively with SIM card and Anneta module to be connected, the GPRS modulation /demodulation module receives the AT and referred to Make, respond AT instruction and demodulation is modulated to the GPRS signals of communication and by the GPRS signals of communication after modulation /demodulation Send to the host computer subsystem and carry out signal quality detection.

As another preferred scheme of the present utility model, a grasshopper fuse unit is also serially connected with refrigerator power circuit.

As another preferred scheme of the present utility model, the grasshopper fuse unit includes electric fuse F, current transformer T and acoustooptic alarm system；The electric fuse F is connected on current transformer T primary coil, and the acoustooptic alarm system includes Light emitting diode D1, D2, diode D3 and rectification circuit in series electric capacity C, the output end of audio alarm chip IC and honeybee The phonation circuit that ring device PH is connected and composed, described light emitting diode D1, D2 are connected in parallel on current transformer T secondary coil respectively On, the rectification circuit is connected in parallel on current transformer T secondary coil both ends, and the input connection of the buzzer PH is slided Dynamic rheostat R sliding end, another input connection slide rheostat R lower end, slide rheostat R upper end, lower end it Between connect electric capacity C.

The utility model beneficial effect compared with prior art.

It can be monitored the utility model to the service condition of refrigerator, and controllable refrigerator makes to given client opening With strengthening its anti-theft feature.

The DSP module controls electronic lock to unlock after the card using information of card reader is received, and realizes to using in group Control, prevent the loss for causing commodity in refrigerator because of no one in hotel room.And in refrigerator in use, outage detection module is real When monitoring refrigerator whether power off.Temperature detecting module, if one it is found that temperature over-range or refrigerator power-off etc. abnormal conditions, pass through GPRS communication modules are communicated with Surveillance center, and notification is abnormal.

The anti-jamming circuit set up between communication module described in the utility model, data and communication can be effectively avoided by not Necessary noise jamming.

Surveillance center described in the utility model sets up GPRS signal detection modules, is detected for GPRS signal qualitys, when remote Occurs the problems such as poor signal quality in journey communication process, testing staff can go and find out what's going on and investigate in time.

The utility model sets up live early warning of the grasshopper fuse unit as electric power thus supplied, can detect refrigerator at any time Electric power thus supplied, can in advance be alarmed before fuse failure, and alarm includes two kinds of approach of acousto-optic, realize first prediction, early handle.

Brief description of the drawings

The utility model is described further with reference to the accompanying drawings and detailed description.Scope of protection of the utility model It is not only limited to the statement of herein below.

Fig. 1 is the utility model principle block diagram.

Fig. 2 is the utility model GPRS signal detection module theory diagrams.

Fig. 3 is the circuit diagram of the utility model anti-jamming circuit.

Fig. 4 is the utility model grasshopper fuse element circuit figure.

Embodiment

As Figure 1-4, the utility model includes smart card card reader and the electronic lock being arranged on refrigerator body.

The refrigerator body also includes DSP module, GPRS communication module, temperature detecting module, outage detection module and opened Module is closed, the GPRS communication module is additionally provided with anti-jamming circuit；The DSP module passes through in GPRS communication module and monitoring The heart is communicated, and GPRS signal detection modules are also integrated with the Surveillance center.

The DSP module also respectively with smart card card reader, switch module, temperature detecting module and outage detection module phase Even, the switch module is connected with electronic lock.

Preferably, the smart card card reader is CUSTOM HOUSE HOTEL.

Preferably, the refrigerator is a kind of simple gate refrigerator with cold storage function.

Preferably, described anti-jamming circuit includes two-way Transient Suppression Diode encapsulation chip SMDA15C, SMDA15C No. 5 of chip, No. 6, No. 7, No. 8 pins connect together, its common intersection is connected with the GND ends of RS485 chips, SMDA15C cores No. 4 pins of piece are connected with RS485+ signal ends, No. 3 pins connection RS485- signal ends of SMDA15C chips.

Preferably, the GPRS signal detection modules include be used for gather GPRS signals slave computer subsystem and for The slave computer subsystem sends the host computer of AT instructions, and the slave computer subsystem includes being used for the GPRS for gathering GPRS signals Modulation /demodulation module, the SIM card for carrying out GPRS communication authentications and Anneta module；The GPRS modulation /demodulation module respectively with SIM card is connected with Anneta module, and the GPRS modulation /demodulation module receives the AT instructions, responds the AT instructions to described GPRS signals of communication, which are modulated, to be demodulated and sends to the host computer subsystem by the GPRS signals of communication after modulation /demodulation Row signal quality detects.

RS485 that the GPRS communication module includes being connected with DSP, GPRS module and it is connected with RS485, GPRS module Anti-jamming circuit.The DSP of the optional model TMS320F28335 of DSP module is main control chip, using SP485R chips as RS485 transceivers, DSP and RS485 connection belong to this area routine techniques, and those skilled in the art can obtain easily, herein not Add and repeat.

Preferably, also it is serially connected with a grasshopper fuse unit in the refrigerator power circuit.

Preferably, the grasshopper fuse unit includes electric fuse F, current transformer T and acoustooptic alarm system；The electric smelting Silk F is connected on current transformer T primary coil, and the acoustooptic alarm system includes light emitting diode D1, D2, diode D3 The rectification circuit in series with electric capacity C, the phonation circuit that the output end of audio alarm chip IC connects and composes with buzzer PH, Described light emitting diode D1, D2 are connected in parallel on current transformer T secondary coil respectively, and it is mutual that the rectification circuit is connected in parallel on electric current Sensor T secondary coil both ends, the input connection slide rheostat R of buzzer PH sliding end, another is defeated Enter end connection slide rheostat R lower end, electric capacity C is connected between slide rheostat R upper end, lower end.

The grasshopper fuse unit is as shown in figure 4, the master being connected in 220V AC powers with refrigerator alternating current input plug A Subminiature current transformer T is sealed in loop, acoustooptic alarm system, driving sound and light alarm system will be transmitted to after principal current unsteady flow System work, current transformer T effect are to obtain very small percentage electric energy from major loop to be supplied to acoustooptic alarm system.By It is very small in current transformer T primary impedance, when be serially connected in normal use in major loop, on general primary coil Voltage drop be less than 0.1V（Only two one thousandths of 220V voltages）, therefore can consider does not influence on main circuit.Luminous two Pole pipe D1, D2 is respectively two light emitting diodes of a red-green, and model uses 2EF31., will using current transformer T tap Red light emitting diodes D1 is connected in the less tap of the number of turn, and green LED D2 is connected in the larger tap of the number of turn, when Electric current is about 0.5A in main circuit, and green LED D2 lights, when electric current is increased to about 1.1~1.2A, emitting red light Diode D1 also begins to light, to reach the purpose of alarm.Such as need to adjust action current source, the required change tap of band can be selected Current transformer, to detect corresponding current value.Diode D3 and an electric capacity C rectification circuits in series, by current transformer T The secondary AC rectification that measures is superimposed upon slide rheostat R for DC voltage（220 Ω of slide rheostat/0.25W）On.The slip Rheostat R output is terminated in an audio alarm chip IC.When the electric current of major loop reaches certain value, start audio alarm Chip IC, different audible alarm chips can be selected to release different alarm sounds as needed during practical application.Audio report The starting current value of alert chip IC can be realized by adjusting slide rheostat R（Adjustable range 0.4A~5A）.

The outage detection module and temperature detecting module are that those skilled in the art can obtain in fact in known channel Test means；The working power of the control modules such as the DSP module, GPRS communication module provides by battery, does not add to go to live in the household of one's in-laws on getting married herein State.

It is understood that above with respect to specific descriptions of the present utility model, it is merely to illustrate the utility model and is not The technical scheme described by the utility model embodiment is limited to, it will be understood by those within the art that, still can be with The utility model is modified or equivalent substitution, to reach identical technique effect；As long as satisfaction uses needs, all in this reality Within new protection domain.

Claims (7)

1. a kind of intelligent refrigerator monitoring system, including the smart card card reader and electronic lock being arranged on refrigerator body；Its feature It is, the refrigerator body also includes DSP module, GPRS communication module, temperature detecting module, outage detection module and switching molding Block, the GPRS communication modules are additionally provided with anti-jamming circuit；The DSP module passes through GPRS communication modules and Surveillance center Communicate, GPRS signal detection modules are also integrated with the Surveillance center；

The DSP module is also connected with smart card card reader, switch module, temperature detecting module and outage detection module respectively, The switch module is connected with electronic lock.

A kind of 2. intelligent refrigerator monitoring system according to claim 1, it is characterised in that：The smart card card reader is room Card.

A kind of 3. intelligent refrigerator monitoring system according to claim 1, it is characterised in that：The refrigerator only has for one kind The simple gate refrigerator of cold storage function.

A kind of 4. intelligent refrigerator monitoring system according to claim 1, it is characterised in that：Described anti-jamming circuit includes No. 5 of two-way Transient Suppression Diode encapsulation chip SMDA15C, SMDA15C chip, No. 6, No. 7, No. 8 pins connect together, its Common intersection is connected with the GND ends of RS485 chips, and No. 4 pins of SMDA15C chips are connected with RS485+ signal ends, SMDA15C No. 3 pins connection RS485- signal ends of chip.

A kind of 5. intelligent refrigerator monitoring system according to claim 1, it is characterised in that：The GPRS signal detection modules Including for gather GPRS signals slave computer subsystem and for the slave computer subsystem send AT instruction host computer, The slave computer subsystem includes being used to gather the GPRS modulation /demodulation module of GPRS signals, for carrying out GPRS communication authentications SIM card and Anneta module；The GPRS modulation /demodulation module is connected with SIM card and Anneta module respectively, the GPRS modulatedemodulates Mode transfer block, which receives AT instruction, responds the AT instructions is modulated demodulation to the GPRS signals of communication and by modulatedemodulate GPRS signals of communication after tune send to the host computer subsystem and carry out signal quality detection.

A kind of 6. intelligent refrigerator monitoring system according to claim 1, it is characterised in that：Also gone here and there in the power circuit of refrigerator It is connected to a grasshopper fuse unit.

A kind of 7. intelligent refrigerator monitoring system according to claim 6, it is characterised in that：The grasshopper fuse unit includes Electric fuse F, current transformer T and acoustooptic alarm system；The electric fuse F is connected on current transformer T primary coil, institute Stating acoustooptic alarm system includes light emitting diode D1, D2, diode D3 and rectification circuit in series electric capacity C, audio alarm The phonation circuit that the output end of chip IC connects and composes with buzzer PH, described light emitting diode D1, D2 are connected in parallel on electric current respectively On transformer T secondary coil, the rectification circuit is connected in parallel on current transformer T secondary coil both ends, the buzzer PH Input connection slide rheostat R sliding end, another input connection slide rheostat R lower end, slide and become Hinder and connect electric capacity C between device R upper end, lower end.