Embodiment
With reference now to Fig. 1 and Fig. 2, specifically describe first embodiment according to electronic controlled electro endosmosis of the present invention.
Fig. 1 shows the inner structure according to the electronic controlled electro endosmosis of present embodiment.
In electronic controlled electro endosmosis shown in Figure 1, the terminal box 1 that connects line of electric force and electronic controlled electro endosmosis main body is provided, this terminal box 1 has at terminal 1S, 2S on power supply one side and 3S and terminal 1L, 2L and 3L on load one side.Should be noted that in the present embodiment electronic controlled electro endosmosis is suitably for single-phase three-wire type electric power meter.
Electric power is calculated unit 2 and is calculated the amount of electrical power that is consumed, and it has current detecting unit 2a, is used to detect the electric current (1 limit electric current) between 1S and the 1L; Current detecting unit 2b is used to detect the electric current (3 limit electric current) between 3S and the 3L; Voltage detection unit 2c is used to detect voltage (1 polygonal voltage) between 1S and the 2S and the voltage (3 polygonal voltage) between 3S and the 2S; And electric power multiplication unit 2d, be used for 1 limit electric current and 1 polygonal voltage multiplies each other and 3 limit electric currents and 3 polygonal voltages are multiplied each other.
Control module 3 comprises microcomputer or similar device, is used for the result of calculation of described electric power calculating unit 2 is compiled as the electric power data, and controls the storage and the demonstration of described electric power data.Should be noted that the data that are meant the electric power that relevant electric consumer consumes in these electric power data, for example the amount of electrical power that consumed of measurement target system, maximum consumption electric power or the like.
Isolating switch 4 is judged under the unusual situation at control module 3, for example at the illegal situation incision outage stream that uses, and it has the first isolating switch 4a, is used to cut off the electric current (1 limit electric current) between 1S and the 1L, and the second isolating switch 4b, be used to cut off the electric current (3 limit electric current) between 3S and the 3L.The rupturing operation of isolating switch 4 is controlled by control module 3.
Display device 5 comprises LCD or similar device, is used for judging under the unusual situation at control module 3, and for example display abnormality information under illegal situation about using perhaps is used to show the electric power data of being calculated by control module 3.
Communication unit 6 comprises the interface circuit such as current return etc., and be connected to telephone wire or network by the external transmission control device, be used for judging under the unusual situation, for example under illegal situation about using, send abnormal information, perhaps send the electric power data that obtain by control module 3 to the external world.
Wireless radio transmission unit 7 is provided, be used for judging under the unusual situation, for example under illegal situation about using, the radio transmitting/reception type storage arrangement 8 of form to the electronic controlled electro endosmosis outside that appends to present embodiment with radio signal sends abnormal information, perhaps sends the electric power data that obtained by control module 3.The transmission operation of wireless radio transmission unit 7 is controlled by control module 3.
Radio transmitting/reception type storage arrangement 8 comprises can be by the nonvolatile semiconductor memory that uses radio signal to read or write, for example so-called RF label or IC tag are used to store abnormal information or the electric power data that sent by wireless radio transmission unit 7.Described radio transmitting/reception type storage arrangement 8 is bonded on the shell surface as the electric power measurement unit 10A of the main body of electronic controlled electro endosmosis.
At this, described radio transmitting/reception type storage arrangement 8 can have inner structure for example shown in Figure 2, it has and is used to the antenna 201 that sends or receive radio signals, be used for transmission/receiving element 202 of sending or receive radio signals by antenna 201, and the memory cell 203 that forms by the nonvolatile memory of for example ferroelectric memory (F-RAM) etc., the function that it has abnormal information that storage receives by transmission/receiving element 202 or electric power data and obtains data such as date and electric consumer ID numbering such as past data, and have read stored such as the function of data such as abnormal information or electric power data to send by transmission/receiving element 202.
Next, the operation of the electronic controlled electro endosmosis of present embodiment will be described in detail.
Electric power calculating unit 2 calculates by the amount of electrical power that the electric consumer consumed and with result of calculation and is notified to control module 3.The electric power data of the amount of electrical power that control module 3 converts result of calculation for example to be consumed, the described data of storage and with this data presentation on display device 5.
At this,, so just can reduce the electricity charge if the electric consumer can make the measured amount of electric power meter reduce or be zero.For this reason, disconnect the phenomenon of illegally using in 1S one side or 3S one side or at both sides and 1S terminal and 3S terminal just having occurred many signal wires by will being connected to voltage detection unit 2c in recent years.In this case, electric current line between 1S and the 1L and the electric current line between 3S and the 3L also keep connecting, and therefore still can carry out power supply to load one side, but the measured amount of electric power meter is reduced or are zero.For instance, only cutting off under the voltage condition in 1S one side or 3S one side, measured amount will become only about half of.And when cutting off under the voltage condition in 1S one side and 3S one side, measured amount will be zero.
Yet in the electronic controlled electro endosmosis of present embodiment, even if under the situation of having carried out such illegal operation, illegal operation also can be detected in the following way.That is, when current detecting unit 2a and 2b detect 1 limit electric current and 3 limit electric currents respectively as the result of working load, and voltage detection unit 2c to detect the voltage of 1S terminal one side and 3S terminal one side be 0 o'clock, just show to have illegal the use.For this reason, when current detecting unit 2a detects electric current and the voltage of 1S one side when being 0 effectively, perhaps detect electric current and the voltage of 3S one side when being 0 effectively as current detecting unit 2b, control module 3 is judged and is had illegal operation.
Then, judging the control module 3 that has illegal operation will represent to exist the abnormal information of illegal operation to store in radio transmitting/reception type storage arrangement 8 by wireless radio transmission unit 7.In addition, control module 3 also stores in radio transmitting/reception type storage arrangement 8 by the measurement data of wireless radio transmission unit 7 with electronic controlled electro endosmosis.
Like this, for example, when the ammeter overlooker once collected measured value in every month, the ammeter overlooker takes off the radio transmitting/reception type storage arrangement 8 of RF label form and it is taken back office, in office, read measured value and check whether there is illegal operation, so just can avoid illegal electricity charge transaction.Should be noted that to come when checking ammeter, to obtain measured value and abnormal information by a bonding RF label that does not write any data when taking off the RF label next time.
Equally, judging the control module 3 that has illegal operation also can exist expression the abnormal information of illegal operation to be presented on the display device 5.
Judging the control module 3 that has illegal operation can also for example will represent to exist the abnormal information of illegal operation to send to the central apparatus that is positioned at office via communication unit 6 by using telephone wire and e-mail.
In addition, judge the control module 3 that has illegal operation and can also send the cut-out order, stop to carry out power supply so that isolating switch 4a and 4b cut off the electric current line, thereby avoid illegal operation to load to isolating switch 4a and 4b.
As mentioned above,, can provide a kind of when having illegal the use, can detect unusually, as the abnormal information storage, send or show this fact, and stop to carry out the electronic controlled electro endosmosis of power supply to load according to present embodiment.
Describe second embodiment in detail below with reference to Fig. 3 and Fig. 4 according to electronic controlled electro endosmosis of the present invention.
Fig. 3 shows the inner structure according to the electronic controlled electro endosmosis of present embodiment.
Difference between the electric power meter of the electronic controlled electro endosmosis shown in Figure 3 and first embodiment is, be different from and pass through wireless radio transmission unit 7 among first embodiment abnormal information and the externally additional radio transmitting/reception type storage arrangement 8 of electric power data storage, present embodiment provides storage arrangement 9 in the inside as the electric power measurement unit 10B of the main body of electronic controlled electro endosmosis, and with these data storage in storage arrangement 9.Described storage arrangement 9 has radio transmission function and inner structure as shown in Figure 4.Storage arrangement 9 comprises the nonvolatile semiconductor memory that can read or write by radio signal, for example so-called RF label or IC tag, its storage and read operation are controlled by the control module 3 that is electrically connected, but data also can read by using the radio signal that enters from the electronic controlled electro endosmosis outside.
Storage arrangement 9 has inner structure as shown in Figure 4, it has for example antenna 401, be used for sending or receiving radio signals from for example having external units such as handheld terminal that radio signal produces function, and transmission/receiving element 402, be used for obtaining data storage such as date and electric consumer ID numbering such as past data to memory cell 403, and be used for and be stored in sending of memory cell 403 such as the form of electric power data such as the amount of electrical power that is consumed, maximum consumption electric power with radio signal with what antenna 401 received.
Memory cell 403 comprises for example nonvolatile memory of ferroelectric memory (F-RAM) etc., it has storage and uses the function of obtaining data such as date and electric consumer ID numbering such as past data of radio signal setting by antenna 401 and transmission/receiving element 402, and stores the function of being imported by the control module 3 of the main body of electronic controlled electro endosmosis such as by control circuit 404 such as data such as electric power data.Control circuit 404 controls send and receive for the electronics of outside, to read or to write data by being electrically connected to control module 3 via bus or similar facilities.
Judge the control module 3 that has illegal operation with abnormal information and electric power data storage in storage arrangement 9.By reading abnormal information and the electric power data that are stored in the storage arrangement 9 by handheld terminal with radio transmitting and receiving function or similar device, and check whether there is illegal operation, so just can avoid the illegal electricity charge to conclude the business.
On the other hand, carry out radio transmitting and reception generally, needing very big electric power to carry out radio transmitting and reception.But, under the situation of the illegal operation that the cut-out pressure-wire takes place, can not expect by using external power source to operate electronic controlled electro endosmosis, therefore must operate electronic controlled electro endosmosis as power supply by using similar devices such as internal backup battery.Carrying out radio transmitting and reception generally, owing to need power consumption, therefore similar device such as jumbo reserve battery is necessary, but the storage arrangement of present embodiment 9 can be operated as power supply from the radio signal of outside by using, and do not need similar devices such as reserve battery, so just can provide compact power supply for electronic controlled electro endosmosis fully.
As mentioned above, according to present embodiment, can provide compact power supply for electronic controlled electro endosmosis, it is unusual that it can be detected when having illegal the use, as the abnormal information storage, send or show this fact, and stops to carry out power supply to load.
Like this,, illegal use can be on electronic controlled electro endosmosis, detected, thereby illegal electricity charge transaction can be avoided according to the present invention.
Should be noted that except embodiment already mentioned above, under the situation that does not deviate from novelty of the present invention and useful feature, can carry out various modifications and variations the foregoing description.Correspondingly, these modifications and variations are included within the scope of subsidiary claims.