CN101614758B - Electronic type indicator - Google Patents
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- CN101614758B CN101614758B CN2008101809535A CN200810180953A CN101614758B CN 101614758 B CN101614758 B CN 101614758B CN 2008101809535 A CN2008101809535 A CN 2008101809535A CN 200810180953 A CN200810180953 A CN 200810180953A CN 101614758 B CN101614758 B CN 101614758B
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Abstract
The invention provides an electronic type indicator that can simplifies monitored work of electrical parameters of three-phase circuits and is low in cost and great in distinctiveness and is easy to set. The electronic type indicator includes three digital display portions, a digital control portion that outputs display elements for digital display to the three digital display portions, a bar diagram display portion, a bar diagram control portion that outputs the display elements for bar diagram display to the bar diagram display portion. When the display elements input from the digital control portion respectively to the three digital display portions are completely same, ruled display elements are output from the bar diagram control portion.
Description
Technical field
The present invention relates to a kind of electronic indicator, to the voltage and current of its input three-phase circuit, based on above-mentioned voltage and current, computing also shows the electric parameters such as voltage, electric current, power, reactance capacity, power factor and frequency of three-phase circuit.
Background technology
At present; For electronic indicator following technology has been proposed; To voltage, the electric current of its input circuit, the electric parameter that will calculate based on this voltage and current is presented at 1 digital display part and 1 bar chart display part on the two; Thereby take into account the intuitive monitoring (for example, with reference to patent documentation 1) that the direct numerical value that utilizes digital value to carry out is kept watch on and utilized the bar chart demonstration to carry out.
Patent documentation 1: the spy open flat 8-136281 communique (the 6th page, Fig. 1)
Summary of the invention
Existing electronic indicator; Only have 1 digital display part and 1 bar chart display part; For example be used under the situation of three-phase circuit; To each when showing the electric parameters such as voltage, electric current, power, reactance capacity and power factor of three-phase circuit mutually, very loaded down with trivial details to the operation that the electric parameter that shows in the electric parameter that shows in the digital display part and the bar chart display part switches.
As eliminating one of loaded down with trivial details countermeasure of aforesaid operations; A plurality of digital display parts can be set, but in the case, if a plurality of bar chart display parts corresponding with a plurality of digital display parts are set; Then there is following problem; The space that is used for this display part becomes big and price uprises, and perhaps, bar chart that is shown or digital value diminish and make that showing becomes is difficult to observe.
In addition, as another countermeasure, can 1 bar chart display part be set to a plurality of digital display parts; But in the case; Owing to be to be presented in a plurality of demonstration key elements a plurality of digital display parts from numeral to select 1, only 1 the demonstration key element corresponding with this demonstration key element of selecting carried out bar chart and show, so can only keep watch on the state of 1 phase of three-phase circuit through bar chart; Must show mutually through switching each, still have the loaded down with trivial details problem of operation of keeping watch on.
The present invention proposes in order to solve the problems referred to above in the existing apparatus, and its purpose is to provide a kind of electronic indicator, and its electric parameter that can simplify three-phase circuit is kept watch on operation, and price is low and identity is good, and sets easily.
Electronic indicator involved in the present invention has: measure operational part, it is transfused to the voltage and current as the three-phase circuit of measured circuit, based on the voltage and current of said input, and the electric parameter of the said three-phase circuit of computing; Digital control portion, it is exported as being used to carry out the demonstration key element that numeral shows any at least 1 in said voltage, said electric current and the said electric parameter; 3 digital display parts, it is transfused to the said demonstration key element from said digital control output, and these demonstration key elements are carried out the numeral demonstration respectively; The bar chart control part, it is exported as being used to carry out the demonstration key element that bar chart shows any at least 1 in said voltage, electric current and the electric parameter; And bar chart display part; It is transfused to from the said demonstration key element of said bar chart control part output; And this demonstration key element is carried out bar chart show; From said digital control respectively to said 3 digital display parts input to be used for said demonstration key element that said numeral shows all be identical demonstration key element the time, the demonstration key element that said bar chart control part output is stipulated is as the said demonstration key element that is used for said bar chart demonstration.
The effect of invention
According to electronic indicator involved in the present invention; From digital control respectively to 3 digital display parts inputs to be used for demonstration key element that numeral shows all be identical demonstration key element the time; The demonstration key element that the bar chart control part will be stipulated is exported as the demonstration key element that is used for the bar chart demonstration; So show under the identical situation of key elements at 3 that are used for the numeral demonstration; Can the demonstration key element of the maximal value of the summation of the mean value that should show each phase in the key element, each phase, each phase and minimum value etc. and expectation be carried out bar chart to show in 1 bar chart display part, make the electric parameter of three-phase circuit keep watch on operation and simplify; Price is low and identity is good, and sets easily.
Description of drawings
Fig. 1 is the block diagram of the related electronic indicator of expression embodiment of the present invention 1.
Fig. 2 is the process flow diagrams that bar chart output is judged when measuring of three-phase 3 line circuits in the related electronic indicator of embodiment of the present invention 1.
Fig. 3 is the process flow diagram that bar chart output is judged when measuring of the three-phase 4-wire circuit in the related electronic indicator of embodiment of the present invention 1.
Fig. 4 is the process flow diagram that the bar chart output of the related electronic indicator of embodiment of the present invention 2 is judged.
Fig. 5 is the block diagram of the related electronic indicator of expression embodiment of the present invention 3.
Fig. 6 is the process flow diagram that the bar chart output of the related electronic indicator of embodiment of the present invention 3 is judged.
Embodiment
Embodiment 1
Fig. 1 is the block diagram of the related electronic indicator of expression embodiment of the present invention 1.In Fig. 1, the three-phase 3 line formula circuit (below, abbreviate " three-phase circuit " as) 50 that power supply (not shown) carries out wiring with the Δ mode are made up of conductor R, conductor S and conductor T, are the measuring objects of stating various electric parameters after electronic indicator 100 computings.Electronic indicator 100 has measures operational part 1, digital control 2, bar chart control part 3, operating portion 4, setting value storage 5,3 digital display parts 6 of control part and 1 bar chart display part 7; Wherein, above-mentioned 3 digital display parts 6 are made up of digital epimere display part 61, digital stage casing display part 62 and digital hypomere display part 63.
For measuring operational part 1; Its input terminal is connected with conductor R, conductor S and the conductor T of three-phase circuit 50 respectively; Import RS phase voltage and ST phase voltage and R phase current and T phase current respectively; This measures operational part 1 based on above-mentioned voltage and electric current; After setting in the setting value storage control part 5, state setting value, the voltage effective value of computing TR phase voltage, S phase current, each phase, the current effective value of each phase, general power, total reactance capacity, total applied power and total power factor, and be that electric parameter inputs to digital control 2 and bar chart control part 3 with its operation result.
Setting value storage control part 5 exports phase line form setting value in the setting value of above-mentioned storage 501 and bar chart display setting value 502 to bar chart control part 3, exports displaying contents setting value 503 to digital control 2.Here, phase line form setting value 501, bar chart display setting value 502 and displaying contents setting value 503 comprise the setting content beyond numerical value or the numerical value.
From measuring operational part 1 to digital control 2 input electric parameter; This electric parameter is by inputing to the voltage and current of measuring operational part 1; And constitute by the voltage effective value of measuring each phase that operational part 1 calculates, current effective value, general power, total reactance capacity, total applied power and the total power factor of each phase; This digital control 2 based on utilized operating portion 4 to set and be stored in the displaying contents setting value 503 in the setting value storage control part 5 by operating personnel; Will be from the electric parameter of input the electric parameter that select as be used for by after state digital display part 6 and carry out the demonstration key element that numeral shows and export, this digital control 2 has digital epimere control part 201, digital stage casing control part 202 and digital hypomere control part 203.
For bar chart control part 3; Store the phase line form setting value 501 and the bar chart display setting value 502 of control part 5 outputs from the above-mentioned electric parameter of measurement operational part 1 output, from setting value to its input; Simultaneously; Also to its input from the output of digital control 2 digital epimere control part 201, digital stage casing control part 202 and digital hypomere control part 203, and output be used for by after state bar chart display part 7 and carry out the demonstration key element that bar chart shows.
Numeral epimere display part 61, digital stage casing display part 62 and digital hypomere display part 63; Corresponding with digital control 2 digital epimere control part 201, digital stage casing control part 202 and digital hypomere control part 203 respectively and be provided with, to showing that from the conduct of digital epimere control part 201, digital stage casing control part 202 and 203 outputs of digital hypomere control part the electric parameter of key element carries out numeral demonstration respectively.Bar chart display part 7 will show the electric parameter of key element from the conduct of bar chart control part 3 outputs, utilize bar chart to simulate demonstration.
Below, action is described.Three-phase circuit 50 is three-phase 3 line formulas in this embodiment, and operating personnel utilize operating portion 4 that the phase line form is set at three-phase 3 line formulas, and this setting value is stored in the setting value storage control part 5 as phase line form setting value 501.Measure operational part 1 according to the phase line form setting value 501 that is stored in the setting value storage control part 5; Based on RS phase voltage and ST phase voltage and R phase current and T phase current from three-phase circuit 50 inputs; Obtain the value of TR phase voltage and the value of S phase current through computing; Simultaneously, obtain the voltage effective value of each phase, current effective value, general power, total reactance capacity, total applied power and the total power factor of each phase through computing.
With value that inputs to the voltage and current of measuring operational part 1 and the above-mentioned electric parameter that calculates, export digital control 2 to and bar chart control part 3.Digital control 2 information that obtains based on displaying contents setting value 503 from setting value storage control part 5; Be chosen in the electric parameter that shows on corresponding digital epimere display part 61, digital stage casing display part 62 and the digital hypomere display part 63 respectively, respectively from digital epimere control part 201, digital stage casing control part 202 and digital hypomere control part 203 as showing that key element exports.To digital epimere display part 61, digital stage casing display part 62 and digital hypomere display part 63; Import respectively from the demonstration key element separately of the digital epimere control part 201 of correspondence, digital stage casing control part 202 and 203 outputs of digital hypomere control part, and these demonstration key elements are carried out the numeral demonstration.
Under the situation of this embodiment 1; For example; Numeral epimere control part 201 carries out numeral as showing key element output by 61 pairs of these values of digital epimere display part with the value of RS phase voltage and shows; Numeral stage casing control part 202 carries out numeral as showing key element output by 62 pairs of these values of digital stage casing display part with the value of ST phase voltage and shows, digital hypomere control part 203 carries out numeral as showing key element output by 63 pairs of these values of digital hypomere display part with the value of TR phase voltage and shows.
In addition; Through the operation of operating portion 4, can at random set, so that the value of certain 1 or 2 some phase voltage of output in digital epimere control part 201, digital stage casing control part 202 and the digital hypomere control part 203 to the displaying contents setting value of setting value storage control part 5; And the value of other 2 or 1 some phase current of output; In the case, digital epimere display part 61, digital stage casing display part 62 and digital hypomere display part 63 are with from the above-mentioned demonstration key element of digital control 2 input accordingly; Carry out numeral by certain 1 or 2 values and show, and 2 or 1 value to some phase current are carried out the numeral demonstration in addition some phase voltage.
In addition; To when the demonstration key element of above-mentioned digital control 2 output is carried out numeral demonstration; Bar chart control part 3 is based on the phase line form setting value 501 of setting value storage control part 5 and the output of bar chart display setting value 502; And from the output relevant of digital control 2 digital epimere control part 201, digital stage casing control part 202 and digital hypomere control part 203 with each digital displaying contents; As after select the regulation electric parameter from the electric parameter of measuring operational part 1 input shown in stating, this electric parameter of selecting is exported as being used to carry out the demonstration key element that bar chart shows.Bar chart display part 7 utilizes bar chart to simulating demonstration from the demonstration key element of bar chart control part 3 outputs.
Fig. 2 is that the phase line form setting value 501 in will being stored in setting value storage control part 5 is set under the situation of three-phase 3 line formulas the process flow diagram that the output of the bar chart of bar chart control part 3 is judged.This processing is carried out with specific time interval repeatedly.Among Fig. 2,, judge the blocked operation that whether has carried out digital demonstration, under the situation of the blocked operation that digital demonstration has taken place, become " being " and get into step S112 through operating portion 4 at step S111.If do not switch operation, then become " denying " and end process.In step S112, at first the demonstration key element from digital epimere control part 201, digital stage casing control part 202 and 203 outputs of digital hypomere control part is compared, judges.
If digital epimere control part 201, digital stage casing control part 202 and digital hypomere control part 203 are not to show that all key element all is voltage, or shows that all key elements all are electric current; Then the result of determination of step S112 becomes " denying " and gets into step S113; The electric parameter that to select based on the bar chart display setting value 502 that is stored in the setting value storage control part 5 exports also end process of bar chart display part 7 to as being used to carry out the demonstration key element that bar chart shows.The demonstration key element of 7 pairs of these outputs of bar chart display part is that electric parameter carries out the bar chart demonstration.On the other hand, all be voltage, perhaps show that all key element all is an electric current that then the result of determination of step S112 becomes " being " and gets into step S114, is that voltage or electric current compare, judge to this demonstration key element if all show key element.
Showing that all key element all is under the situation of electric current, the result of determination of step S114 becomes " denying " and gets into step S115.In step S115, the value of the S phase current that bar chart control part 3 will calculate based on the value of value that inputs to the R phase current of measuring operational part 1 and T phase current is as being used to carry out also end process of demonstration key element output that bar chart shows.Bar chart display part 7 shows that to the conduct from 3 inputs of bar chart control part the value of the S phase current of key element simulates demonstration through bar chart.
Showing that all key element all is under the voltage condition, the result of determination of step S114 becomes " being " and gets into step S116.In step S116, the value of the TR phase voltage that bar chart control part 3 will calculate based on the value of value that inputs to the RS phase voltage of measuring operational part 1 and ST phase voltage is as being used to carry out also end process of demonstration key element output that bar chart shows.Bar chart display part 7 shows that to the conduct from 3 inputs of bar chart control part the value of the TR phase voltage of key element simulates demonstration through bar chart.
Below, the situation that three-phase circuit 50 is carried out the three-phase 4 line formulas of wiring for power supply with the Y mode describes.In the case, operating personnel operate operating portion 4, and the phase line form is set at three-phase 4 line formulas, and this setting value is stored in the setting value storage control part 5 as phase line form setting value 501.
For measuring operational part 1; Its input terminal is connected with conductor R, conductor S and the conductor T of three-phase circuit 50 respectively; Import R phase voltage, S phase voltage and T phase voltage and R phase current, S phase current and T phase current respectively; This measures the value of operational part 1 based on the voltage and the electric current of above-mentioned input, and computing is as the voltage effective value and average voltage, each current effective value mutually and average current, each power mutually and general power, each reactance capacity mutually and total reactance capacity, each applied power mutually and total applied power and each power factor and total power factor mutually of each phase of electric parameter.Then, the value with the voltage and the electric current of this operation result and above-mentioned input inputs to digital control 2 and bar chart control part 3.
Carry out with the Y mode for power supply at three-phase circuit 50 under the situation of three-phase 4 line formula circuit of wiring; For example; Numeral epimere control part 201 is exported the value of R phase voltage as being used to carry out the digital demonstration key element that shows; And carry out numeral by 61 pairs of these values of digital epimere display part and show that digital stage casing control part 202 carries out the demonstration key element output that numeral shows with the value of S phase voltage as being used to, and carries out the numeral demonstration by 62 pairs of these values of digital stage casing display part; Numeral hypomere control part 203 carries out the demonstration key element output that numeral shows with the value of T phase voltage as being used to, and carries out the numeral demonstration by 63 pairs of these values of digital hypomere display part.
In addition; Operation through operating portion 4; Can at random set the displaying contents setting value of setting value storage control part 5; So that the values of certain 1 or 2 some phase voltage of output in digital epimere control part 201, digital stage casing control part 202 and the digital hypomere control part 203, and the value of 2 or 1 some phase current of output in addition.In the case; Numeral epimere display part 61, digital stage casing display part 62 and digital hypomere display part 63; With from digital control 2 the input above-mentioned demonstration key element accordingly; Show by certain 1 or 2 values, and 2 or 1 value to some phase current are carried out numeral demonstration in addition some phase voltage.
In addition; To when the demonstration key element of above-mentioned digital control 2 output is carried out numeral demonstration; Bar chart control part 3 is based on the phase line form setting value 501 of setting value storage control part 5 and the output of bar chart display setting value 502; And from the output relevant of digital control 2 digital epimere control part 201, digital stage casing control part 202 and digital hypomere control part 203 with each digital displaying contents; As after select the regulation electric parameter from the electric parameter of measuring operational part 1 input shown in stating, this electric parameter of selecting is exported as being used to carry out the demonstration key element that bar chart shows.Bar chart display part 7 utilizes bar chart that the demonstration key element from the conduct regulation electric parameter of bar chart control part 3 output is simulated demonstration.
Fig. 3 is that the phase line form setting value 501 in will being stored in setting value storage control part 5 is set under the situation of three-phase 4 line formulas the process flow diagram that the output of the bar chart of bar chart control part 3 is judged.This processing is carried out with specific time interval repeatedly.Among Fig. 3,, judge the blocked operation that whether has carried out digital demonstration, under the situation of the blocked operation that digital demonstration has taken place, become " being " and get into step S102 through operating portion 4 at step S101.If do not switch operation, then become " denying " and end process.In step S102, at first the demonstration key element to digital epimere control part 201, digital stage casing control part 202 and digital hypomere control part 203 compares, judges.
If the demonstration key element of digital epimere control part 201, digital stage casing control part 202 and digital hypomere control part 203 is all not identical; Then the result of determination of this step S102 becomes " denying " and gets into step S103; Will be based on the electric parameter that is stored in bar chart display setting value 502 selections in the setting value storage control part 5, as being used to carry out output of demonstration key element and the end process that bar chart shows.7 pairs of conducts from 3 outputs of bar chart control part of bar chart display part show that the electric parameter of key element carries out bar chart and shows.Whether on the other hand, if show that all key element is all identical, then the result of determination of step S102 becomes " being " and gets into step S104, be that voltage or electric current compare, judge to this demonstration key element.
Showing that key element is that the result of determination of step S104 becomes " denying " and gets into step S105 under the situation of the demonstration key element beyond voltage or the electric current.In step S105, export the total value and the end process of the demonstration key element of digital epimere control part 201, digital stage casing control part 202 and digital hypomere control part 203.The demonstration key element of for example digital epimere control part 201, digital stage casing control part 202 and digital hypomere control part 203 is the power factor of each phase, and then bar chart control part 3 total power factor that this three-phase circuit is whole is exported as showing key element.Bar chart display part 7 shows that to the conduct from bar chart control part 3 output the total power factor of key element simulates demonstration through bar chart.
Showing that key element is under the situation of voltage or electric current, the result of determination of step S104 becomes " being " and gets into step S106.In step S106; Bar chart control part 3 is the mean value of each phase voltage or electric current with the demonstration key element of digital epimere control part 201, digital stage casing control part 202 and digital hypomere control part 203, as being used to carry out output of demonstration key element and the end process that bar chart shows.Bar chart display part 7 shows that to the conduct from bar chart control part 3 output the voltage of key element or the mean value of electric current simulates demonstration through bar chart.
As noted above; 1 related electronic indicator according to the embodiment of the present invention; Electric parameter to three-phase circuit; On 3 digital display parts, show the electric parameter of each phase of identical element, thereby can in 1 bar chart, keep watch on above-mentioned 3 values that numeral shows intuitively, can save to whole digital values and switch successively and be presented at the trouble in the bar chart.In addition, judge the electric parameter that shows by the bar chart display part automatically owing to the electric parameter that shows according to numeral, so can simplify the setting that is used to carry out the bar chart demonstration.
Below, embodiment 2 related electronic indicators of the present invention are described.Fig. 4 is the process flow diagram that the bar chart output of the bar chart control part 3 of the related electronic indicator of embodiment of the present invention 2 is judged.In addition, other parts are identical with the situation of above-mentioned embodiment 1.
Among Fig. 4, at step S121, the blocked operation of the displaying contents that judges whether to have carried out being shown by digital display part 6 through operating portion 4 if blocked operation has taken place, then becomes " being " and gets into step S122.If do not switch operation, then become " denying " and end process.In step S122, the demonstration key element of digital epimere control part 201, digital stage casing control part 202 and digital hypomere control part 203 is compared, judges.If show that key element is all not identical, then the result of determination of step S122 becomes " denying " and gets into step S123, and according to the bar chart display setting value 502 that is stored in the setting value storage control part 5, output shows key element and end process.The demonstration key element of 7 pairs of these outputs of bar chart display part is carried out bar chart and is shown.
Show that in each numeral key element all is under the situation of identical demonstration key element from digital epimere control part 201, digital stage casing control part 202 and 203 outputs of digital hypomere control part; Promptly; For example by digital epimere control part 201 voltage of R phase is exported as the demonstration key element respectively; Numeral stage casing control part 202 is exported the voltage of S phase as the demonstration key element; Under the situation of voltage as the output of demonstration key element of numeral hypomere control part 203 with the T phase, the result of determination of step S122 becomes " being " and gets into step S124.
In step S124, obtain maximal value and minimum value in this identical demonstration key element, the two value is carried out the demonstration key element that bar chart shows as being used to, export bar chart display part 7 and end process to.Bar chart display part 7 shows that through bar chart the conduct of this output shows the maximal value and the minimum value of key element.
As noted above; 2 related electronic indicators according to the embodiment of the present invention; Electric parameter to three-phase circuit; On 3 digital display parts, show the electric parameter of each phase of identical element, thereby can in 1 bar chart, keep watch on maximal value and the minimum value of above-mentioned 3 numerals in showing intuitively, can save to whole digital values and switch successively and be presented at the trouble in the bar chart.
Embodiment 3
Below, embodiment 3 related electronic indicators of the present invention are described.Fig. 5 is the block diagram of the related electronic indicator of embodiment of the present invention 3, and Fig. 6 is the process flow diagram that the bar chart output of its bar chart control part is judged, this processing is carried out with specific time interval repeatedly.In Fig. 5, the bar chart that is connected with bar chart control part 3 shows and switches timer 8, as after state shown in, the switching that the bar chart of bar chart display part 7 shows is controlled.In addition, other structures are identical with above-mentioned embodiment 1.
Below, action is described.Among Fig. 6,, judge whether the switching of digital displaying contents has been carried out in the operation of operating portion 4, under the situation of the switching that digital displaying contents has taken place, become " being " and get into step S132 through operating personnel at step S131.In step S132, compare, judge to whether the demonstration key element of digital epimere control part 201, digital stage casing control part 202 and digital hypomere control part 203 is identical.
If the demonstration key element of digital display part 6 is all not identical; Then the result of determination of step S132 becomes " denying " and gets into step S133, and that value that shows key element in the bar chart display setting value 503 that is stored in setting value storage control part 5 is exported and end process.Thus, the demonstration key element of 7 pairs of these outputs of bar chart display part is carried out the bar chart demonstration.
Show that in each numeral key element all is that the result of determination of step S132 becomes " being " and gets into step S134 under the situation of identical key element from digital epimere control part 201, digital stage casing control part 202 and 203 outputs of digital hypomere control part.In step S134, bar chart control part 3 makes bar chart show switch timer 8 to start and get into step S135, and the value with the demonstration key element of prima facies, for example R phase exports bar chart display part 7 and end process to.Thus, the demonstration key element of the prima facies of 7 pairs of these inputs of bar chart display part is carried out the bar chart demonstration.
Under this state, if the switching that numeral shows takes place, then the result of determination of step S131 is for " denying " and get into step S136.Bar chart show to switch timer 8 and begins through after the stipulated time of setting among step S134, starting, and output bar chart switching timing in step S136, shows that to whether having produced this bar chart switching timing judges.Show switching timing if produced bar chart, then the result of determination of step S136 becomes " being ", gets into step S137, switches the phase of the demonstration key element of bar chart, exports the demonstration key element of next phase, for example S phase, end process.Thus, the demonstration key element of the next phase of 7 pairs of these inputs of bar chart display part is carried out the bar chart demonstration.
Then, begin from this state, if the switching that numeral shows does not take place, then the result of determination of step S131 is " denying " once more, gets into step S136.Bar chart show to switch timer 8 and begins to export the bar chart switching timing once more through after the stipulated time from the output of last bar chart switching timing, in step S136, shows that to whether having produced this bar chart switching timing judges.Show switching timing if produced bar shaped, then the result of determination of step S136 becomes " being ", gets into step S137, switches the phase of the demonstration key element of bar chart, exports the demonstration key element of next phase, for example T phase with respect to the phase of last time, end process.Thus, the demonstration key element of the next phase of 7 pairs of these inputs of bar chart display part is carried out the bar chart demonstration.
As noted above; 3 related electronic indicators according to the embodiment of the present invention; Can whenever switch successively mutually according to each the demonstration of bar chart display part 7, can on 3 digital display parts, show the electric parameter of each phase of identical element to the electric parameter of three-phase circuit at a distance from certain stipulated time; Thereby in 1 bar chart, keep watch on above-mentioned 3 values that numeral shows intuitively, can save to whole digital values and switch successively and be presented at the trouble in the bar chart.
Claims (8)
1. electronic indicator is characterized in that having:
Measure operational part, it is transfused to the voltage and current as the three-phase circuit of measured circuit, based on the voltage and current of said input, and the electric parameter of the said three-phase circuit of computing;
Digital control portion, it is exported as being used to carry out the demonstration key element that numeral shows any at least 1 in said voltage, said electric current and the said electric parameter;
3 digital display parts, it is transfused to the said demonstration key element from said digital control output, and these demonstration key elements are carried out the numeral demonstration respectively;
The bar chart control part, it is exported as being used to carry out the demonstration key element that bar chart shows any at least 1 in said voltage, electric current and the electric parameter; And
The bar chart display part, it is transfused to from the said demonstration key element of said bar chart control part output, and this demonstration key element is carried out the bar chart demonstration,
From said digital control respectively to said 3 digital display parts input to be used for said demonstration key element that said numeral shows all be identical demonstration key element the time; The demonstration key element of said bar chart control part output regulation is as being used for the said demonstration key element that said bar chart shows.
2. electronic indicator according to claim 1 is characterized in that,
When said three-phase circuit is three-phase 3 line formula circuit; If from said digital control respectively to RS phase voltage, ST phase voltage and the TR phase voltage that to be used for said demonstration key element that said numeral shows be said three-phase circuit of said 3 digital display parts input, then said bar chart control part is exported said TR phase voltage as the demonstration key element of said regulation.
3. electronic indicator according to claim 1 is characterized in that,
When said three-phase circuit is three-phase 3 line formula circuit; If from said digital control respectively to R phase current, S phase current and the T phase current that to be used for said demonstration key element that said numeral shows be said three-phase circuit of said 3 digital display parts input, then said bar chart control part is exported said S phase current as the demonstration key element of said regulation.
4. electronic indicator according to claim 1 is characterized in that,
When said three-phase circuit is three-phase 4 line formula circuit; If from said digital control respectively to each phase voltage that to be used for said demonstration key element that said numeral shows be said three-phase circuit of said 3 digital display parts input, then said bar chart control part is exported the mean value of said each phase voltage as the demonstration key element of said regulation.
5. electronic indicator according to claim 1 is characterized in that,
When said three-phase circuit is three-phase 4 line formula circuit; If from said digital control respectively to each phase current that to be used for said demonstration key element that said numeral shows be said three-phase circuit of said 3 digital display parts input, then said bar chart control part is exported the mean value of said each phase current as the demonstration key element of said regulation.
6. electronic indicator according to claim 1 is characterized in that,
When said three-phase circuit is three-phase 4 line formula circuit; If from said digital control respectively to power, reactance capacity, applied power and the power factor that to be used for said demonstration key element that said numeral shows be each phase of said three-phase circuit of said 3 digital display parts input certain a kind; Then said bar chart control part will be respectively to the summation that is used for the said demonstration key element that said numeral shows of said 3 digital display parts inputs, export as the demonstration key element of said regulation.
7. electronic indicator according to claim 1 is characterized in that,
If from said digital control respectively to voltage, electric current, power, reactance capacity, applied power and the power factor that to be used for said demonstration key element that said numeral shows be each phase of said three-phase circuit of said 3 digital display parts input certain a kind; Then said bar chart control part will be respectively to the maximal value and the minimum value that are used for the said demonstration key element that said numeral shows of said 3 digital display parts inputs, export as the demonstration key element of said regulation.
8. electronic indicator according to claim 1 is characterized in that,
Have and be used for the switching timer that bar chart shows; From said digital control during respectively to the same demonstration key element of each phase that to be used for said demonstration key element that said numeral shows be said three-phase circuit of said 3 digital display parts input; Said bar chart control part is based on the switching timing from said switching timer output; The demonstration key element that is used for the bar chart demonstration of each phase that will be corresponding with carrying out said digital said each the same demonstration key element mutually that shows is switched successively and is exported according to said respectively phase.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008168818 | 2008-06-27 | ||
| JP2008-168818 | 2008-06-27 | ||
| JP2008168818A JP4986940B2 (en) | 2008-06-27 | 2008-06-27 | Electronic indicator |
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| ES2525815T3 (en) | 2007-03-15 | 2014-12-30 | Interdigital Technology Corporation | Method and apparatus for reordering data in an evolved high-speed packet access system |
| JP2012083199A (en) * | 2010-10-12 | 2012-04-26 | Mitsubishi Electric Corp | Electronic indicating instrument |
| IN2013MU02485A (en) * | 2013-07-26 | 2015-09-25 | Tektronix Inc | |
| JP6116493B2 (en) * | 2014-01-27 | 2017-04-19 | 三菱電機株式会社 | Electronic indicator |
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| GB2039372A (en) * | 1979-01-08 | 1980-08-06 | Bendix Corp | Test apparatus for electrical control systems of internal combustion engines |
| CN1818670A (en) * | 2006-01-24 | 2006-08-16 | 北京工业大学 | Method and device for calibrating wide-band sampling oscillograph |
| CN2938113Y (en) * | 2006-08-24 | 2007-08-22 | 王悦 | Digital oscilloscope |
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| JPH01285820A (en) * | 1988-05-12 | 1989-11-16 | Mitsubishi Electric Corp | Display device for measurement |
| JP3325738B2 (en) * | 1995-03-13 | 2002-09-17 | 三菱電機株式会社 | Composite indicating instrument |
| JP2002323527A (en) * | 2001-04-25 | 2002-11-08 | Mitsubishi Electric Corp | Voltmeter with grounding detecting function |
| JP3856710B2 (en) * | 2002-02-21 | 2006-12-13 | 三菱電機株式会社 | Electronic AC ammeter |
| JP4545081B2 (en) * | 2005-10-31 | 2010-09-15 | 日置電機株式会社 | measuring device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2039372A (en) * | 1979-01-08 | 1980-08-06 | Bendix Corp | Test apparatus for electrical control systems of internal combustion engines |
| CN1818670A (en) * | 2006-01-24 | 2006-08-16 | 北京工业大学 | Method and device for calibrating wide-band sampling oscillograph |
| CN2938113Y (en) * | 2006-08-24 | 2007-08-22 | 王悦 | Digital oscilloscope |
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| JP特开平8-136281A 1996.05.31 |
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| JP4986940B2 (en) | 2012-07-25 |
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