CN103940457A - Method for realizing counting turns of electronic type multi-turn encoder with low power consumption - Google Patents

Abstract

The invention relates to a method for realizing counting the turns of an electronic type multi-turn encoder with low power consumption, belonging to a method for realizing counting the turns of an encoder with low power consumption. A raster provided with the absolute position information of single-turn vernier code and multi-turn two-bit Gray code information is adopted, a multi-turn counting part and a single-ring part independently work, the multi-turn counting part works in an intermittent way and drives a luminescent tube and a photoelectric receiver to work during the working time T1, and the multi-turn counting part stops powering to the photoelectric receiver and the luminescent tube in a dormant state. The method provided by the invention has the advantages of being capable of recording the rotating turns with low power consumption under the condition that the encoder rotates after the power down.

Description

A kind of implementation method of low-power consumption of electronic type encoder meter circle

Technical field

The method for realizing low power consumption that the invention belongs to a kind of electronic type encoder meter circle, is applied in high-grade, digitally controlled machine tools, servomotor, the fields such as mechanical arm, and position and the occasion of rotating the number of turns require can take measurement of an angle simultaneously.

Background technology

Photelectric receiver, individual pen decoding circuit that traditional individual pen photoelectric encoder has luminotron, with the grating of vernier code pattern, with grating pattern, matches, scrambler grating is with vernier code coding pattern, photelectric receiver can match with it, when luminotron and photelectric receiver are worked simultaneously, the light signal that photelectric receiver receives dish code after cutting apart can be exported 12 tunnel simulating signals, the 12 tunnel simulating signals individual pen angle-data that is used for decoding.

At high-grade, digitally controlled machine tools and servomotor field, need wide range, high-acruracy survey to do FEEDBACK CONTROL, to improve the efficiency that adds man-hour in large scale, high precision, in the every circle diverse location angle information of meter record, also will count record and rotate the number of turns, i.e. encoder.Grating is with two Gray code information, two Gray codes are divided into four quadrants by grating, photelectric receiver can match with it, when luminotron and photelectric receiver are worked simultaneously, photelectric receiver receives two Gray code information, when grating rotates one week, two Gray codes are transformed to 00,01,11,10 successively.Multi-turn counting part judges that sense of rotation meter record rotate the number of turns according to this, and when two Gray code data are when 10 become 00, rotating the number of turns increases " 1 ", becomes at 10 o'clock from 00, rotates the number of turns and subtracts " 1 ".Existing mechanical encoder cost is high, the life-span is short.Traditional electronics encoder is after externally power supply is stopped power supply, and turning collar logarithmic data is lost, and when scrambler is reworked, number of turns data are classified as default value again.With the electronics encoder of revolution memory function before power supply is stopped power supply, data can be deposited in nonvolatile memory, when scrambler is reworked, can again read out the turning collar logarithmic data depositing in, but in the time of stopping power supply at scrambler, the number of turns of rotation can not be counted record wherein; Utilize the electronics encoder of capacitances to supply power after power supply is stopped power supply, the electric weight of electric capacity is limited, and the meter record revolution function of very short time can only be provided, and traditional electronics encoder is after power down, because power consumption is high, cannot in the situation that scrambler rotates, count record for a long time and rotate the number of turns.

Summary of the invention

The invention provides a kind of implementation method of low-power consumption of electronic type encoder meter circle, to solve traditional electronics encoder after power down, because power consumption is high, cannot in the situation that scrambler rotates, count the problem that the number of turns is rotated in record for a long time.

The technical scheme that the present invention takes is:

(1) adopt the grating with individual pen vernier code absolute location information and two Gray code information of multi-turn;

(2) multi-turn counting part partly works alone with individual pen, and the regional work voltage that makes photelectric receiver receive vernier code is U1～U2, and at the following idle of U1; The operating voltage that receives Gray code region is U3～U2, and U3<U1<U2, when scrambler is worked under use backup battery state, the operating voltage of photelectric receiver is between U3 ~ U1, in photelectric receiver, receive the minimum U1 of vernier code pattern part higher than the minimum U3 that receives gray code map code part, do not work in the region that now receives vernier code in photelectric receiver, no consumption electric current, only has the region that receives Gray code to have current sinking;

(3) multi-turn counting part is with intermittent work mode, each working time of multi-turn counting part is T1, then enter " dormancy " state, " dormancy " state time is T2, in working time T1, multi-turn counting part drives luminotron and photelectric receiver work, and under " dormancy " state, multi-turn counting part stops to photelectric receiver and luminotron power supply, and described " dormancy " state time T 2 is ta～tb, and the maximal value of grating rotating speed is W, when grating rotating speed is during at W/10 ~ W, T2 is tb, and when grating rotating speed is during at W/50, T2 is ta.

Advantage of the present invention is, after power down, low in energy consumption, can in the situation that scrambler rotates, count record for a long time and rotate the number of turns.Multi-turn counting part is when primary power is powered, and whole scrambler is in continuous firing state, when scrambler power supply is stopped power supply, utilize standby power supply work, now multi-turn counting partly, luminotron, photelectric receiver enters discontinuous operation state, multi-turn counting part at set intervals, it is sweep interval, drive luminotron luminous and power to photelectric receiver, can export Gray code information, and read two Gray code information, to calculate, rotate the number of turns, then multi-turn count section enters dormant state, to save battery electric quantity, after scrambler primary power powers on, multi-turn counting part switches to scrambler Power supply, further save standby power supply electric weight.When utilizing powered battery, in photelectric receiver, receive the partially-working voltage of individual pen vernier code higher than the operating voltage that receives Gray code part, the former could work while only having externally Power supply, when scrambler switches to standby power supply work, because backup power source voltage is lower than its minimum, and quit work, the part that receives Gray code can work under this low-voltage.When multi-turn is counted part with intermittent work mode, sweep interval is shorter, larger to battery power consumption; Sweep interval is longer, less for guaranteeing the rotational angular velocity that accurately the meter record number of turns allows, for solving the present invention of this contradiction, adopted the working method of variable sweep interval time, multi-turn counting part can be broken and sentence a yard grating rotating speed according to the change frequency of two Gray codes, and automatically adjust sweep interval according to rotating speed, save battery electric quantity, can also guarantee that scrambler can accurately count record and rotate the number of turns when power supply is stopped power supply simultaneously.

Accompanying drawing explanation

Fig. 1 is the structural representation of the code-disc taked of the present invention;

Grating vernier code has three code channels, is M, S, N code channel, and two Gray codes have two code channels 1, and every code channel has several equally spaced bright dark fringes (printing opacity and light tight); Coding road, implementation column middle reaches You coding M, S, tri-code channel bright fringess of N can value be: 256,240,255, and two code channel bright fringess of Gray code are all 1.

Embodiment

(1) adopt the grating with individual pen vernier code absolute location information and two Gray code information of multi-turn, as shown in Figure 1;

(2) multi-turn counting part partly works alone with individual pen, and the regional work voltage that makes photelectric receiver receive vernier code is U1～U2, and at the following idle of U1; The operating voltage that receives Gray code region is U3～U2, and U3<U1<U2, when scrambler is worked under use backup battery state, the operating voltage of photelectric receiver is between U3 ~ U1, in photelectric receiver, receive the minimum U1 of vernier code pattern part higher than the minimum U3 that receives gray code map code part, do not work in the region that now receives vernier code in photelectric receiver, no consumption electric current, only have the region that receives Gray code to have current sinking, with this, realize the object that reduces power consumption;

(3) multi-turn counting part is with intermittent work mode, each working time of multi-turn counting part is T1, then enter " dormancy " state, " dormancy " state time is T2, in working time T1, multi-turn counting part drives luminotron and photelectric receiver work, and under " dormancy " state, multi-turn counting part stops to photelectric receiver and luminotron power supply, to reduce power consumption; Described " dormancy " state time T 2 is ta～tb, and the maximal value of grating rotating speed is W, and when grating rotating speed is during at W/10 ~ W, T2 is tb, and when grating rotating speed is during at W/50, T2 is ta.

Claims (1)

1. an implementation method for the low-power consumption of electronic type encoder meter circle, is characterized in that:

(1) adopt the grating with individual pen vernier code absolute location information and two Gray code information of multi-turn;

(2) multi-turn counting part partly works alone with individual pen, and the regional work voltage that makes photelectric receiver receive vernier code is U1～U2, and at the following idle of U1; The operating voltage that receives Gray code region is U3～U2, and U3<U1<U2, when scrambler is worked under use backup battery state, the operating voltage of photelectric receiver is between U3 ~ U1, in photelectric receiver, receive the minimum U1 of vernier code pattern part higher than the minimum U3 that receives gray code map code part, do not work in the region that now receives vernier code in photelectric receiver, no consumption electric current, only has the region that receives Gray code to have current sinking;

(3) multi-turn counting part is with intermittent work mode, each working time of multi-turn counting part is T1, then enter " dormancy " state, " dormancy " state time is T2, in working time T1, multi-turn counting part drives luminotron and photelectric receiver work, and under " dormancy " state, multi-turn counting part stops to photelectric receiver and luminotron power supply, and described " dormancy " state time T 2 is ta～tb, and the maximal value of grating rotating speed is W, when grating rotating speed is during at W/10 ~ W, T2 is tb, and when grating rotating speed is during at W/50, T2 is ta.