CN2708322Y

CN2708322Y - Cover opening recording device

Info

Publication number: CN2708322Y
Application number: CN 200420021560
Authority: CN
Inventors: 汪健
Original assignee: SHANGHAI INFOTEC ELECTRONICS CO Ltd
Current assignee: SHANGHAI INFOTEC ELECTRONICS CO Ltd
Priority date: 2004-04-02
Filing date: 2004-04-02
Publication date: 2005-07-06
Anticipated expiration: 2014-04-02

Abstract

The utility model relates to a cover opening recording device, in particular to an electric energy meter anti-theft electricity cover opening recording device. The utility model is composed of a push rod (1), a spring (2), a microswitch (3) and a record display circuit (4). The utility model is characterized in that the push rod (1) is arranged in the screw hole of the tight cover. So long as the screw of the tight cover is quitted, the utility model can record uncapping conditions by matching the record display circuit. Records of need can comprise uncapping times and the time of each uncapping. The utility model has the advantages that it makes full use of the screw hole of the tight cover and the screw hole is originally arranged in the equipment. The utility model does not change the original structure of the cover to realize the purpose of uncapping recording. The utility model takes less capping cover time and saves working hours when capping the cover, and the utility model is unlike other cover opening recording device which are needed to meaningly aimed at the microswitch of the cover opening recording device.

Description

The pen recorder of uncapping

(1) technical field

The utility model relates to a kind of anti-electricity-theft pen recorder of uncapping of the pen recorder of uncapping, particularly electric energy meter.

(2) background technology

Supplying with the stealing electricity phenomenon in the electrical domain all is very general and serious phenomenon at home or in the world.Stealing electricity method has a lot, and opening end button cover is one of its method, opens the end button cover of electric energy meter, changes the wiring of electric energy meter, makes electric energy meter counter-rotating (inverted running) or does not change (not moving); Two of stealing electricity method is that the table of opening electric energy meter covers, and destroys the program of inner measuring mechanism or change electric energy meter, reaches the purpose of stealing.In order to oppose electricity-stealing, people have thought many anti-electricity-theft ways, and at above-mentioned two kinds of stealing electricity methods, people have designed the pen recorder of uncapping.

The existing pen recorder of uncapping is to cover at the electric energy meter table to establish a prominent nail, corresponding with the microswitch on being contained in the electric energy meter internal circuit board, covering table cover processus aboralis and follows closely microswitch is pressed, make microswitch be in closure state, in case the table lid is opened, microswitch just is released, and is in the state of cut-offfing, and just uncapping to write down by writing circuit exists.The shortcoming of this method is, the table lid is the special list lid of the prominent nail of band, and the circuit board of dress microswitch is had relatively high expectations with the relative position of the prominent nail of table lid, if it is not high, lid table lid just compares difficulty, cover badly, the handle of prominent nail and microswitch is not to going up, and this pen recorder of uncapping just loses effectiveness.If write down the record that end button cover is opened simultaneously, just need design the end button cover of a prominent nail of band again, add simultaneously a circuit board again in terminal box microswitch is installed, also there is the identical shortcoming of the pen recorder of uncapping of above-mentioned table lid in the pen recorder of uncapping of this end button cover.Need two kinds of pen recorders of uncapping simultaneously, not only need to transform terminal box, need special table lid and end button cover, and the lid table covers and the lid end button cover needs expensive man-hour, has improved the cost of electric energy meter.

(3) summary of the invention

The objective of the invention is to, do not change the project organization of original table lid and end button cover, utilize the screw hole of existing fixed table lid and end button cover, the installation pen recorder of uncapping, can realize writing down the purpose of the situation of uncapping, not need again when capping, painstakingly the prominent nail that covers will be aimed at the handle of microswitch, save capping man-hour, the validity of the pen recorder of guaranteeing to uncap.

The present invention realizes like this, in the screw capping screw hole, insert a columniform push rod (1) that has step, a spring (2) is inserted in the step lower end of push rod (1), the lower end of spring (2) is tightened up and is down turriform and contacts with the handle of microswitch (3), when the screw capping screw is screwed into screw and lid is tightened, the screw capping screw promotes push rod (1) and drives spring (2), spring (2) promotes microswitch (3), and be compressed simultaneously, microswitch (3) is in closure state, record display circuit (4) is a normal condition with this state recording, will not show.When opening when covering, must unclamp the screw capping screw, in this process, spring (2) loosens, and push rod (1) is upwards pushed up, break away from the screw capping nut fully until the screw capping screw, push rod (1) arrives limes superiors, and the handle of microswitch (3) also arrives limes superiors, and microswitch (3) is in the state of cut-offfing, record display circuit (4) is the state of uncapping with this state recording, and gives counting and demonstration.

In record display circuit (4), increase little process chip (5) and calendar clock circuit (6), then by calendar clock circuit (6) produce programmable calendar, clock signal is exported to little process chip (5), burning corresponding software in little process chip (5), then when microswitch (3) state changes, little process chip (5) record also shows the concrete moment of uncapping number of times and uncapping at every turn, and be stored in the chip.

When uncap pen recorder and other functional circuit use together, for example when the pen recorder of uncapping is part of electronic electric energy meter, the record display circuit (4) of pen recorder of uncapping can merge with the functional circuit of electronic electric energy meter and uses, or a shared display.If electric energy meter is a multi-rate electric energy meter, this multi-rate electric energy meter has little process chip and calendar clock circuit, so, the pen recorder of uncapping does not just need in addition with the record display circuit, only need the wiring of microswitch (3) and the input interface of power supply and little process chip (5) are linked to each other, in programming software, increase the record subroutine of uncapping and get final product.

(4) description of drawings

Referring to Fig. 1, Fig. 1 is the structural drawing of pen recorder of uncapping.(7) among the figure are the nuts of tightening lid, and (1) is the push rod that has step, and (2) are springs, and (3) are microswitches, and (4) are the displayed record circuit, and this displayed record circuit can be known digital circuit.Push rod is installed in the hole of nut (7), and spring (2) is being overlapped in the push rod lower end, and the free end of spring (2) contacts with the handle of microswitch (3).The handle (or whole microswitch) of the lower end of push rod (1), spring (2) and microswitch (3) is installed in the hole of the base (9) below the nut.

Referring to Fig. 2, Fig. 2 is the theory diagram that comprises little process chip (5), calendar clock circuit (6) and display (8) in the record display circuit (4), and wherein (3) are microswitch.

Referring to Fig. 3, Fig. 3 is structure and the theory diagram that has concrete enforcement circuit.

(5) embodiment

Accompanying drawing 3 has provided a kind of embodiment, and the circuit in the frame of broken lines is a record display circuit (4).Calendar clock circuit (6) wherein is by power supply V _DDOr reserve battery E power supply, be in running status all the time, provide calendar and clock data to microprocessor (5).Microprocessor (5) and display (8) and microswitch (3) are by another group power supply V _CCPower supply.When covering (10) when tegmentum is tight, push rod (1) in the downward nut (7) that promotes to embed in the base (9) of tight lid screw (11), push rod (1) compression spring (2), the handle of microswitch (3) is pressed onto the end, microswitch (3) is in closure state, the P port of microprocessor (5) is in low level, as the record of the tight state of lid; When uncapping, when tight lid screw (9) withdraws from screw (7), push rod (1) upwards, be in polarity, spring (2) unclamps, and the handle of microswitch (3) is got back to the self-heating state, and microswitch (3) is in off-state, the P port of microprocessor (5) is in high level, when microprocessor receives this low level, start the logging program of uncapping, write down the time in the uncap number of times and the corresponding moment, these record data are shown by display (8).

When uncap pen recorder and other functional circuit use together, when for example using together with the time-sharing circuit of multi-rate electric energy meter, then microprocessor (5), display (8) and calendar clock circuit (6) all are major parts of time-sharing electric energy meter, and the pen recorder of uncapping just can share above-mentioned device with time-sharing circuit.

Calendar clock circuit (6) in the record display circuit can be the real-time calendar clock integrated circuit of PCF8563, and this integrated circuit can be referring to the product introduction of Philips company.Microprocessor (5) can be the MB89P485 integrated circuit, this circuit has the COM0 to COM3 of direct driving LCD LCD and the port of SEG0 to SEG22, the driving LCD is very convenient, and this microprocessor sees the introduction of Japanese Fu Shitong company corresponding product for details.LCD display circuit (8) can have various design according to the difference of the function of using.Here can't describe in detail.

In the specific implementation, the device in the foregoing circuit can be said different fully with this instructions, as long as but reaching the record Presentation Function all is scope of the present utility model.

Claims

1. the anti-electricity-theft pen recorder of uncapping of the pen recorder of uncapping, particularly electric energy meter, it includes push rod, spring, microswitch and record display circuit, it is characterized in that: push rod is installed in the screw of tightening lid.

2. the pen recorder of uncapping according to claim 1 is characterized in that: include little process chip and calendar clock circuit in the writing circuit.

3. the pen recorder of uncapping according to claim 1 and 2 is characterized in that: the record display circuit of the pen recorder of uncapping and the micro-processor interface circuit of multifunctional electric energy meter or multi-rate meter, calendar clock circuit, display circuit etc. share.