JP7099090B2 - Integrated value transmission and counting processing method, as well as pulse signal transmission and counting device - Google Patents

Description

The present invention relates to an integrated value transmission method and a counting processing method for transmitting that a predetermined amount of integrated values have been added by a pulse signal, and a pulse signal transmitting device and a pulse counting device that realize the methods.

Of the data from the measuring instrument, for data such as the integrated value of electric energy, it is possible to send a pulse signal that creates a pulse each time it exceeds a predetermined value and count the number of pulses with a counter installed at a distance. It is done. However, it is conceivable that the pulse level fluctuates due to the fluctuation of the power supply voltage supplied to the device, and erroneous measurement occurs. Therefore, a pulse detection circuit that fluctuates the reference voltage according to the power supply voltage has been proposed (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 10-177043 (paragraphs 0019 to 0023, FIGS. 1 to 3)

However, the influence of noise cannot be removed only by changing the reference voltage according to the power supply voltage, and it is necessary to use an expensive shielded cable in order to suppress the noise. However, even in that case, it was difficult to completely suppress the influence of noise.

The present invention has been made to solve such a problem, and an object of the present invention is to realize transmission of integrated values capable of highly reliable counting without using complicated telegrams or expensive shielded cables. There is.

The integrated value transmission and counting processing method of the present invention is an integrated value transmission and counting processing method for transmitting an integrated value by a pulse signal, and each time a predetermined amount of the integrated value is added, there are three types at that time. A step of sequentially setting the above repetition order information, a pulse signal output step of outputting a pulse signal composed of pulses having different forms according to the sequentially set order information, and a step of detecting a pulse in the pulse signal. The step of determining the order of the detected pulses based on the form of the detected pulse, the step of counting the detected pulses, and the order determined for the detected pulse are continuous with the latest pulse. If it is determined in the count determination step of determining whether the count is normal or not and the count determination step of the count determination step, the detected pulse is erroneously pulsed one time before. If the continuity with the pulse two times before is confirmed, the pulse one time before is deleted, and if the signal that should be originally recognized as a pulse is not recognized one time before that, twice. It is characterized by including a counting correction step of complementing one if it can be confirmed that there is no continuity with the previous pulse .

Further, the pulse signal transmission and counting device of the present invention is a sensor that detects a signal indicating that a predetermined amount of integrated value has been added, and when the sensor detects the signal, three or more types of repetition order information for each signal. A pulse signal transmission device having an order information setting unit for sequentially setting the above, and a pulse signal output unit for outputting a pulse signal composed of pulses having different forms according to the sequentially set order information, and a repeating order of three or more types. A pulse detection unit that detects a pulse in a pulse signal composed of information-added pulses, an order determination unit that determines the order of the pulses based on the detected pulse form, a counting unit that counts the detected pulses, and a counting unit. If the order determined for the detected pulse is erroneously recognized as a pulse one time before the detected pulse, and if the continuity with the pulse two times before can be confirmed, the previous pulse is confirmed. If the signal that should be recognized as a pulse is not recognized before the pulse is deleted and it can be confirmed that there is no continuity with the pulse two times before, the counting correction unit that complements one . It is characterized by being provided with a pulse counting device having the above.

According to the integrated value transmission method, the counting processing method, or the pulse signal transmission device and the pulse counting device for realizing the integrated value transmission method and the counting processing method of the present invention, the order information is added to the pulse, so that the reading is caused by the influence of noise and the like. It is possible to determine the presence or absence of skipping and extra counting, and it is possible to realize highly reliable counting.

It is a waveform diagram for demonstrating the waveform of the pulse signal which has the order information sent and received in the integrated value transmission method which concerns on Embodiment 1 of this invention. It is a block diagram which shows the equipment structure which includes the pulse signal sending apparatus and the pulse counting apparatus for executing the integrated value transmission method and the counting processing method which concerns on Embodiment 1 of this invention. It is a circuit diagram which shows the structure of the pulse signal transmission apparatus which concerns on Embodiment 1 of this invention. It is a timing chart for demonstrating the addition example of the waveform and order information of the pulse signal transmitted and received in the integrated value transmission method which concerns on Embodiment 1 of this invention, and the counting process which removed the influence of noise, etc. in the counting process method. .. It is a block diagram which shows the structure of the pulse counting device which concerns on Embodiment 1 of this invention. It is a flowchart for demonstrating the process of discriminating and correcting an erroneous measurement in the counting process method which concerns on Embodiment 1 of this invention. In order to explain an example of imparting waveforms and sequence information of pulse signals transmitted and received in the integrated value transmission method according to the first example of the second embodiment of the present invention, and a counting process in which the influence of noise and the like is removed in the counting processing method. It is a timing chart of. In order to explain an example of imparting waveforms and sequence information of pulse signals transmitted and received in the integrated value transmission method according to the second example of the second embodiment of the present invention, and a counting process in which the influence of noise and the like is removed in the counting processing method. It is a timing chart of. It is a timing chart for demonstrating the waveform of the pulse signal transmitted and received in the integrated value transmission method which concerns on the 3rd example of Embodiment 2 of this invention. It is a timing chart for demonstrating the waveform and the counting process of the pulse signal sent and received in the general integrated value transmission method.

Embodiment 1.
1 to 5 are for explaining the integrated value transmission method and the counting processing method according to the first embodiment of the present invention, and the configuration and operation of the pulse signal transmission device and the pulse counting device for realizing them. Is. 1 (a) to 1 (f) are timing charts for explaining a pulse signal waveform having order information transmitted / received in the integrated value transmission method according to the first embodiment of the present invention, and FIGS. 1 (a) to 1 (a). ) Is the waveform of the detection signal formed by the pulse signal transmission device for the service signal from the instrument for pulse detection, FIG. 1 (b) is the sequence information associated with each pulse in the detection signal, and FIG. 1 (c) is. The waveform of the pulse signal transmitted from the pulse signal transmission device with sequence information, FIG. 1 (d) is the waveform of the pulse signal received by the pulse counter, and FIG. 1 (e) is from the pulse in the received pulse signal. The discriminated order information and FIG. 1 (f) show the counted values counted based on the discriminated order information. In the following figures as well, in the timing chart as shown in FIG. 1, the horizontal axes of the vertically arranged figures are synchronized.

Further, FIG. 2 shows a measuring instrument and a pulse signal transmitting device for executing an integrated value transmission method and a counting processing method for counting by a remote device using a service signal oscillated from the measuring instrument. , A block diagram showing a device configuration by a pulse counter, FIG. 3 shows four types of repetition order information of J1 to J4 using a binary counter for a pulse in an input service signal in a pulse signal transmission device. It is a circuit diagram which shows the circuit part for giving.

Then, in FIGS. 4 (a) to 4 (g), in the integrated value transmission method, four kinds of repetition order information of J1 to J4 are given to the detected pulse by using a binary counter, and the signal is transmitted during signal transmission. It is a timing chart for explaining the correction of the count value when the output level is lowered and the signal mixed with noise is received, and FIG. 4A is a pulse detection of a service signal from an instrument received by a pulse signal transmission device. The waveform of the detection signal molded for this purpose, FIG. 4 (b) is the logical value of division by the binary counter, FIG. 4 (c) is the logical value of division by the binary counter, and FIG. 4 (d) is 2. The waveform of the pulse signal transmitted from the pulse signal transmission device by adding the order information formed by the combination of the frequency division logic value and the frequency division logic value, FIG. 4 (e) shows temporary loss due to loss or the like during transmission. The waveform of the pulse signal with a drop in the signal level and the mixture of noise, FIG. 4 (f) shows the sequence information acquired when the signal level is temporarily lowered due to loss or the like during transmission or the noise is mixed. , FIG. 4 (g) shows the count values appropriately counted even if there are missing or excessive pulses based on the discriminated order information.

Further, FIG. 5 shows that in the pulse counting device, the order of the pulses for detecting the counting error is determined from the form of the pulse in the received pulse signal, and the presence or absence of the erroneous counting is determined from the continuity of the determined order. FIG. 6 is a block diagram showing a circuit configuration for correcting the counting, and FIG. 6 is a flowchart for explaining a process of determining the presence or absence of an erroneous counting and making a correction when there is an erroneous counting in the counting processing method.

On the other hand, FIGS. 10A to 10H are timing charts for explaining waveforms of pulse signals transmitted and received in a general integrated value transmission method and a counting processing method, and FIGS. 10A and 10A are pulse signals. The waveform of the detection signal obtained by molding the service signal received by the transmission device for pulse detection, FIG. 10 (b) is the waveform of the pulse signal transmitted from the general pulse signal transmission device, and FIG. 10 (c) is the general. The waveform of a high-quality pulse signal received by the pulse counter, FIG. 10 (d) is a count value counted based on the received high-quality pulse signal, and FIG. 10 (e) is a signal level due to transmission loss or the like. The waveform of the pulse signal that is considered to be received by the pulse counting device when it is temporarily lowered, FIG. 10 (f) shows the counting value counted by a general pulse counting device based on the pulse signal including the signal whose signal level is lowered. 10 (g) shows the waveform of a pulse signal that is considered to be received by the pulse counter when noise is picked up during transmission due to improper shielding, etc., and FIG. 10 (h) shows a general pulse signal based on a pulse signal containing noise. The counting value counted by the pulse counting device is shown.

In the integrated value transmission method and the counting processing method according to the first embodiment of the present invention, and the pulse signal transmitting device and the pulse counting device for realizing the integrated value transmission method, the repetition order information is sequentially added to each pulse constituting the pulse signal. It is characterized in that it is transmitted. However, before the explanation, as a configuration of a device for transmitting and receiving data by transmitting a pulse signal, a device for transmitting and receiving integrated electric energy data from a watt-hour meter will be described.

The device configuration for realizing the integrated value transmission method according to the first embodiment is the same as the configuration of the device that transmits the integrated value by a general pulse. For example, a watt-hour meter, which is an instrument that outputs a service signal including a pulse, outputs a service signal including a pulse to a service wiring drawn out to the outside every time the integrated value of the electric energy exceeds a predetermined value. Here, in order not to give noise that disturbs the measurement to the watt-hour meter, which is a measuring instrument, it is necessary to detect the service signal without directly connecting the service wiring to an external device. be.

Therefore, as shown in FIG. 2, the service wiring 2 of the watt-hour meter 1 detects a pulse in a service signal by passing through a pulse detection CT (Current Transformer: current sensor) 41 in a non-contact manner. A pulse signal transmission device 4 for generating a pulse for transmission in synchronization with the detected pulse and transmitting it to a distant position via a transmission cable 3 and a pulse signal output from the pulse signal transmission device 4 are received. It is composed of a pulse counting device 5 that counts the number of pulses.

The pulse signal transmission device 4 includes a pulse detection CT 41 and a signal conversion unit 42 that converts the detected pulse into a pulse signal for transmission and transmits the signal. Further, the pulse counting device 5 detects the pulse width and the pulse detecting unit 51 that detects the voltage value of the pulse from the received signal, detects the sequence information from the pulse width and the voltage value, and counts based on the sequence information. It has a microcomputer 52 for correcting the error of the above.

In contrast to the equipment for realizing the integrated value transmission method or counting processing method according to the present embodiment, the equipment for performing the general integrated value transmission method or counting processing method is the reference numeral used in the present embodiment. The explanation will be made separately by adding C at the end. The problems of the general integrated value transmission method and the counting processing method will be described with reference to FIG. The pulse detection CT41C outputs the detection signal SdC as shown in FIG. 10A in response to the signal from the watt-hour meter 1. Then, the pulse detection unit of the pulse signal transmission device 4C synchronizes with the detected pulse (P1, P2, ... Pm: if not specified, it is referred to as pulse Pi), and as shown in FIG. 10 (b). , Simply generate a pulse of the same form and send out the output signal SsC.

At this time, when the pulse counting device 5C is input with a high-quality pulse signal SrC as shown in FIG. 10C without transmission loss or noise and having the same high quality as the transmitted pulse signal SsC. As shown in FIG. 10D, the pulse counting device 5C counts (counts) m times. That is, the count Ci corresponding to the pulse Pi output from the watt-hour meter is surely performed, and the count value counted by the pulse counting device 5C is the same value as the number of pulses m output from the watt-hour meter (corresponding to). The integrated value of the amount of electric energy to be performed) can be shown.

However, as shown in FIG. 10 (e), when the pulse signal SrC1 whose signal level is temporarily lowered is input, as shown in FIG. 10 (f), the general pulse counting device 5C has a level of the pulse counting device 5C. The reduced pulse P2w may not be recognized as a pulse. Then, in the pulse counting device 5C, the count corresponding to the pulse P2w does not exist, the count C2 is made for the pulse P3, and the final count value is one from the number of pulses m output from the watt hour meter. The amount of m-1 is small, and erroneous weighing occurs.

Alternatively, as shown in FIG. 10 (g), a pulse signal SrC2 in which noise Nz1 and noise Nz2 are mixed may be input to a general pulse counting device 5C. In that case, as shown in FIG. 10 (h), the pulse counting device 5C may mistakenly recognize the noises Nz1 and Nz2 as pulses and count them as counts C4 and C6. Then, the final counting value by the pulse counting device 5C becomes m + 2, which is two more than the number of pulses m output from the watt-hour meter, and erroneous measurement also occurs.

In order to prevent such temporary decrease in signal level and erroneous measurement due to noise contamination, it was necessary to use a shielded cable that is not affected by disturbance. However, shielded cables with high disturbance elimination ability require special joints themselves, so it is not possible to work on the cable at the site, and it is necessary to determine the cable length in advance, so workability and productivity There were disadvantages such as being unable to respond to short delivery times due to poor performance.

Therefore, in the integrated value transmission method according to each embodiment of the present invention, even if the signal level is temporarily lowered or noise is mixed due to disturbance, the pulse count can be reliably performed in a repeating order of 3 or more. Information Ij is added to the pulse for transmission and reception.

In the first embodiment, the pulse signal transmission device 4 once generates a detection signal Sd obtained by molding the service signal for pulse detection as shown in FIG. 1 (a). Then, for each pulse P1, P2, ..., Pm detected from the generated detection signal Sd, as shown in FIG. 1 (b), four types of repetition order information Ij composed of J1, J2, J3, and J4. Are sequentially assigned and sent. The sequence information Ij is given by a combination of two types of pulse widths (W1, W2) and pulse voltages (V1, V2). For example, a combination of V2 and W1 for the pulse Pi corresponding to the sequence J1, V1 and W1 for the pulse Pi of the sequence J2, V2 and W2 for the pulse Pi of the sequence J3, and V1 and W2 for the pulse Pi of the sequence J4. Generate to be.

In order to sequentially generate such four types of pulse Pi, the pulse signal transmission device 4 has a logic value Lv of two divisions with respect to the pulse in the molded detection signal Sd, as shown in FIG. A binary counter 44 that divides and outputs the logical value Lw divided by 4 is arranged. Then, the pulse voltage setting unit 46 that sets the pulse voltage according to the logic value Lv of the division by 2 and the pulse width setting unit 48 that sets the pulse width according to the logic value Lw of the division of 4 are set. A pulse generation unit 47 that generates a pulse with a voltage and a pulse width is provided.

As a result, the service signal flowing through the service wiring 2 of the watt-hour meter 1 detected by the pulse detection CT 41 is waveform-formed by the inverter and used as the detection signal Sd as shown in FIGS. 4A and 1A. It is input to the binary counter 44. Then, the binary counter 44 transfers the 2-divided logic value Lv shown in FIG. 4 (b) to the pulse voltage setting unit 48 and the 4-divided logic value Lw shown in FIG. 4 (c) to the pulse generation unit 47. Output.

In the pulse voltage setting unit 48, when the logic value Lv divided by 2 is F (false), the inverter 432 outputs an H signal, and the switch element 452 is turned on by inputting an enable H level signal to the switch element 452. Will be done. At this time, since the L level signal is input to the switch element 451, it is turned off. When the switch element 452 is ON and the switch element 451 is OFF, the voltage (DC3.0V) of the second power supply 462 for the pulse voltage V2 is the power supply for the VCS power supply 463 and the monostable multivibrators 471 and 472. It is output to 473.

Alternatively, when the logical value Lv is T (true), the inverter 432 outputs an L signal, the switch element 452 is turned off by inputting the enable L level signal to the switch element 452, and the switch element 451 is H. Since the level signal is input, it is turned on. When the switch element 452 is OFF and the switch element 451 is ON, the voltage (DC 5.0V) of the first power supply 461 for the pulse width V1 is the power supply for the VCS power supply 463 and the monostable multivibrators 471 and 472. It is output to 473.

On the other hand, when the logic value Lw divided by 4 is T, the enable H level signal is input to the monostable multivibrator 471, and the waveform of 10 ms cycle for the pulse width W2 set by the second pulse width setting circuit 482 is output. .. Alternatively, when the logical value Lw is F, the H level signal is output from the inverter 433, the enable H level signal is input to the monostable multivibrator 472, and the pulse width W1 set by the first pulse width setting circuit 481 is used. A waveform with a period of 5 ms is output.

In this way, the logic value Lv generated by dividing by 2 and the logic value Lw generated by dividing by 4 divide the pulse voltage and pulse width as shown in FIGS. 4 (d) and 1 (c). Output while sequentially repeating four different types of pulse Pi. Specifically, for sequence J1, V2, W1 (5.0V: 5ms), pulse of sequence J2 is V1, W1 (3.0V: 5ms), and pulse of sequence J3 is V2, W2 (5. 0V: 10ms), the pulse of sequence J4 is output as a pulse of V1 and W2 (3.0V: 10ms).

That is, the pulse signal transmission device 4 includes a pulse detection CT 41 which is a current sensor for detecting a pulse, a binary counter 44 which is an order information setting unit for sequentially setting the repetition order information Ij for each detected pulse, and an order. It has a pulse voltage setting unit 46, a pulse width setting unit 48, and a pulse generation unit 47, which are pulse signal output units that output pulse signals composed of pulses of different forms according to the information Ij.

As shown in FIG. 5, the pulse counting device 5 that receives the pulse signal Ss output with the sequence information Ij is the pulse detecting unit 51 that detects the pulse width and the pulse voltage from the received pulse signal Sr. It is equipped with. Then, the sequence information Ij is acquired from the pulse width and pulse voltage information detected by the pulse detection unit 51, the order of the pulses is discriminated, and based on the discriminated order, it is determined whether or not the counting is appropriate. It is equipped with a microcomputer 52 that corrects the coefficient if it is not appropriate. Further, in order to determine whether or not the counting is appropriate, an order information storage unit 53 for storing the order information Ij of the previous time and the previous time is provided.

The pulse detection unit 51 has a reference voltage generation circuit 512 that generates a reference voltage capable of discriminating a plurality of voltage levels. Then, the received pulse signal Sr is compared with a plurality of reference voltages generated by the reference voltage generation circuit 512, and the comparator 511 that outputs the discrimination signal Dv indicating the voltage level (for example, 0, V1, V2) as the discrimination result is output. have.

The microcomputer 52 is provided with a second port 521v to which the discrimination signal Dv from the comparator 511 is input and a first port 521w to which the pulse signal Sr is input. It is formed. Then, the order information Ij acquired by the order information acquisition unit 521 is compared with the order information stored in the order information storage unit 53 between the previous time and the time before the previous time, and the count determination unit 522 and the count determination unit 522 for determining the correctness of the count are determined. A counting control unit 523 is formed which makes appropriate corrections and counts based on the determination of.

That is, the pulse counting device 5 includes an order determining unit that determines the order of the detected pulses based on the form of the detected pulse, a counting unit that counts the detected pulses, and another pulse in the order of the detected pulses. It is determined whether or not the pulse is continuous by comparison, and if the order of the pulses is not continuous, one of the pulse and the nearest pulse is deleted or one pulse is deleted so that the order is continuous. A count correction unit that corrects the pulse count by either complementation is constructed by S / W or the like.

Based on the above, the operation of the pulse counting device 5 will be described with reference to the flowchart of FIG.
When the pulse counting device 5 receives the pulse signal Sr input via the transmission cable 3 (step S100), the discriminant signal Dv, which is the discriminant result of the pulse voltage by the comparator 511, becomes the second port of the microcomputer 52. It is output to 521v. Further, the input pulse signal Sr is output to the first port 51 of the microcomputer 52, discriminated about the pulse width, and generates a discriminant signal indicating the width level (for example, W1 and W2).

That is, the pulse width and the pulse height of each pulse Pi in the received pulse signal Sr as shown in FIG. 1 (d) are discriminated, and as shown in FIG. 1 (e), each time the pulse Pi is received, the pulse Pi is discriminated. The order information Ij for determining the order of the pulse Pi is acquired (step S110). When it is recognized as a pulse, the order information Ij of any of J1 to J4 is always acquired.

When the order for each pulse is determined by the acquired order information Ij, it is determined by the software processing after step S120 whether or not they are arranged in the order of J1, J2, J3, J4, J1, J2, and so on. When it is not in order (continuous), it is judged that there is some kind of signal defect (noise mixing or temporary level drop), and the counting is adjusted. There are no restrictions on how to adjust the count, but considering that the frequency of signal defects is low, it is assumed that signal defects will not occur continuously, and simple processing will be performed as much as possible without consuming memory capacity. think about.

For example, even if noise is mistakenly recognized as a pulse one time before a pulse recognized at a certain time, at least this pulse is continuous with the pulse two times before, so that it is the pulse two times before. If continuity can be confirmed, it is sufficient to ignore the previous pulse. At this time, the same applies even if the order information acquired from the pulse one time before happens to be continuous with the pulse two times before.

Further, for example, if a signal that should be originally recognized as a pulse is not recognized one time before the pulse recognized at a certain time, the count of the pulse is the pulse recognized last time (originally two before). On the other hand, the order is skipped by one, so it is temporarily suspended. However, the next time it is recognized, the continuity with the current pulse can be confirmed, so it can be seen that one pulse has disappeared, and one pulse can be supplemented. However, due to the low frequency of signal defects, in this case, the pulse two times before and the pulse this time will not be continuous, so the judgment is that there is no continuity with the pulse two times before. If you can confirm it, you can supplement it by one.

That is, if three or more types of order information Ij (four types in the present embodiment) are set, the presence or absence of a signal defect is determined by determining the continuity with the order information of the previous time and the time before the previous time as follows. And, it becomes possible to execute the adjustment of the count at the same time. Therefore, in the present embodiment, in the step from the determination of the presence or absence of signal failure to the counting adjustment, the sequence information Ij of the previous pulse and the pulse two times before is read from the sequence information storage unit 53 as the past portion (step S120). ). Then, first, it is confirmed whether or not the signal recognized as the previous pulse could be counted (counted), that is, whether or not the counting hold (step S500) treatment described later was performed or performed on the previous pulse. (Step S200).

If the previous pulse was counted (“Y” in step S200), the order information Ij of the previous pulse and the order information acquired this time are compared, and the previous time and this time are continuous, that is, J1, J2, It is confirmed whether or not they are arranged in the order of J3 and J4 (step S210). When they are arranged in order (“Y” in step S210), the current pulse is counted (step S400).

Since the order information Ij of each pulse Pi is arranged in order during the period when there is no signal failure, the pulse Pi in the received pulse signal Sr matches the pulse Pi in the transmitted pulse signal Ss. Therefore, as shown in FIG. 1 (f), counting (C1, C2, ..., Cm) corresponding to the pulse Pi is executed. At this time, the number n recognized as a pulse and the counted number m match.

On the other hand, the addition of the order information Ij itself does not suppress the signal failure. Therefore, also in the method of transmitting the integrated value according to the present embodiment, as in the method of transmitting the integrated value using a general pulse, the received pulse signal Sr has noise as shown in FIG. 4 (e). In some cases, Nz is mixed or a pulse (P3w) whose level is temporarily lowered is transmitted. In the figure, for the sake of simplicity, it is described that the signal failure occurs a plurality of times in a few pulses, but in reality, as described above, the signal failure rarely occurs.

However, when a signal defect that rarely occurs occurs, the presence or absence of a signal defect is determined and the count is adjusted as follows. If the previous pulse has not been counted and has been held (“N” in step S200), it is confirmed whether the order of the previous pulse and the order of the current pulse are continuous (“N” in step S200). Step S300).

When the order of the pulse two times before and the order of the pulse this time are continuous (“Y” in step S300), it is determined that an extra pulse was recognized due to noise or the like as described above, and the previous pulse is used. Ignore it (step S310). Then, the current pulse is recorded (step S400).

On the other hand, when the order of the pulse two times before and the order of the pulse this time are not continuous (“N” in step S300), the frequency of signal failure is low, and as described above, the previous pulse and the current pulse. Will be continuous. Therefore, it is determined that the pulse to be recognized could not be recognized due to the level drop or the like, the pulse for one minute is complemented before the pulse this time (step S320), and the pulse this time is recorded (step S400).

Specifically, for the noise Nz in FIG. 4 (e), some order information Ij is acquired. Here, when the order information other than J2 is acquired from the noise Nz, the count for the noise Nz is suspended (step S500). After that, when the order information Ij (J2) of the pulse P2 is acquired, the order of the pulse P1 (J1) two times before and the order (J2) of the pulse P2 this time are continuous as shown in FIG. 4 (f) (step). "Y" in S300). Therefore, as shown in FIG. 4 (g), the pulse P2 is counted as the second pulse, ignoring the noise Nz.

On the other hand, when the order information of J2 is accidentally acquired from the noise Nz, the noise Nz is counted as the second pulse (steps S210 to S400). However, when the pulse P2 is received next time, the count is suspended (step S500) for the pulse P2, and the pulse P3 is repeated one after another (since it is assumed that signal failure does not occur frequently, this is different from the pulse P3w in FIG. 4 (e). In the case, a high quality pulse is received and recognized as J3), and the continuity between the order (J3) and the noise Nz order (J2) is determined. Since the pulse P3 and the noise Nz are continuous, the pulse P2 is ignored, but if either the pulse P2 or the noise Nz can be ignored, the pulse P3 can be counted as the third pulse, so that the original number of pulses can be obtained. Can be counted.

On the other hand, when it cannot be detected as a pulse like the pulse P3w in FIG. 4 (e), as shown in FIG. 4 (f), the order (J4) of the pulse P4 detected next to the pulse P2 is the order of the pulse P2 (J2). ), So the pulse P4 is put on hold (step S500). However, the order (J1) of the pulse P5 recognized next is discontinuous with the order (J2) of the pulse P2, which is the second time before the pulse P5. Confirming the continuity of the order of the previous pulse P4 (J4) and the order of the current pulse P5 (J1) is the original confirmation item, but based on the above-mentioned preconditions, the pulse P5 and the pulse P2 Check the continuity between the previous time and this time with discontinuity. Then, assuming that one pulse exists between the pulse P4 and the pulse P2, the complement processing (step S320) is performed, and the pulses P4 and P5 are counted as the fourth pulse and the fifth pulse, respectively (step). S400) is done.

The flow shown in FIG. 6 is based on the premise that signal defects do not occur frequently as described above, thereby narrowing down the target of the order information required for judgment and reducing the storage capacity. did it. However, the selection of the correction method when there is a signal defect is not limited to the determination of the continuity with the previous order and the continuity with the previous order described above, and may be another form. For example, assuming that signal defects do not occur continuously, it is only necessary to determine whether to add or delete (ignore) one pulse for correction. In that case, when the detected order information is not continuous, it is only necessary to determine whether adding one makes it continuous or deleting one makes it continuous.

On the other hand, unlike the pulse signal sending device 4, the pulse counting device 5 may be a device that receives signals from a large number of devices including a message operation, and when it is formed in such a device, it is possible to obtain more information. It may be determined whether or not there is a signal defect. In that case, it is possible to determine the presence or absence of signal failure and perform accurate counting even for a target in which signal failure occurs frequently. Even in that case, when the order of repetition is only two, even if the occurrence of signal failure can be detected, it cannot be determined whether to complement or ignore it, so it is necessary to have three or more. As the number of repetitions increases, the circuit mechanism becomes complicated, but the applicability to frequent occurrence of signal failure improves. Furthermore, when 5 or more repetition order information is given, even if it is assumed that signal defects occur continuously, if it is determined whether or not the correction of two or less pulses makes them continuous. Appropriate corrections are possible.

Embodiment 2.
In the first embodiment described above, an example in which four types of order information are repeated with a combination of two types of pulse voltages and two types of pulse widths has been described. In this embodiment, an example of repeating three types of order information will be described. 7 to 9 are for explaining the integrated value transmission method and the counting processing method according to the second embodiment. In the second embodiment, the combination of pulse forms for giving order information is different from that of the first embodiment. Therefore, the circuit configuration for determining the pulse form and the circuit configuration for acquiring the order information from the pulse form are different from those described in FIGS. 3 and 5. However, the flowchart of FIG. 6 can be referred to for determining the presence or absence of erroneous counting and counting processing.

<First example>
7 (a) to 7 (g) are, as a first example of the integrated value transmission method and the counting processing method according to the second embodiment, repeatedly assigning three types of order information of J1 to J3 depending on the pulse width. FIG. 7A is a timing chart for explaining the correction of the count value when the output level is lowered or the signal mixed with noise is received during signal transmission, and FIG. 7A shows the pulse signal transmitted from the pulse signal transmission device. Waveform, FIG. 7 (b) is a pulse signal waveform with a temporary drop in signal level, FIG. 7 (c) is sequence information acquired when there is a temporary drop in signal level, FIG. 7 (d). ) Is the count value properly counted even if there is a pulse defect based on the detected sequence information, FIG. 7 (e) is the waveform of the pulse signal with noise mixed in, and FIG. 7 (f) shows the pulse signal mixed with noise. The order information acquired when there is a pulse, and FIG. 7 (g) shows the count value appropriately counted even if there is a pulse loss based on the detected order information.

In the first example, as shown in FIG. 7A, three types of pulses Pi having different pulse widths are sequentially repeated and output. Specifically, a pulse of W1 (5 ms) is output for the sequence J1, a pulse of W2 (10 ms) is output for the pulse of the sequence J2, and a pulse of W3 (15 ms) is output for the pulse of the sequence J3.

Even with the pulse signal Ss output in such a form, as shown in FIG. 7B, the pulse signal Sr1 including the pulse P2w that cannot be detected as a pulse may be received due to signal loss or the like. In that case, as shown in FIG. 7 (c), the order (J3) of the pulse P3 detected next to the pulse P1 is not continuous with the order (J1) of the pulse P1, so that the pulse P3 is held for counting (step S500). Become.

However, the order (J1) of the pulse P4 detected next is discontinuous with the order (J1) of the pulse P1 which is the second time before the pulse P4. Here, as in the first embodiment, the continuity between the previous time (P3) and the current time is confirmed by the discontinuity between the pulse P4 this time and the pulse P1 two times before. Then, assuming that one pulse exists between the pulse P3 and the pulse P1, a complementary process (step S320) is performed as shown in FIG. 7 (d), and the pulses P3 and P4 are the third pulse, respectively. Counting processing (step S400) is performed as the fourth pulse.

Further, as shown in FIG. 7E, a pulse signal Sr2 including noise Nz erroneously detected as a pulse may be received. Also at this time, as shown in FIG. 7 (f), when the order information other than J3 is acquired from the noise Nz, the count for the noise Nz is suspended (step S500). After that, when the pulse P3 is detected, the order of the pulse P2 two times before (J2) and the order of the pulse P3 this time (J3) are continuous (“Y” in step S300). Therefore, as shown in FIG. 7 (g), the pulse P3 is counted as the third pulse, ignoring the noise Nz.

On the other hand, when the order information of J3 is accidentally acquired from the noise Nz, the noise Nz is counted as the third pulse (steps S210 to S400). However, when the pulse P3 is received next time, the count is suspended (step S500) for the pulse P3, and the continuity between the sequence of the pulses P4 (J4) and the sequence of the noise Nz (J3) one after another is determined. Since the pulse P4 and the noise Nz are continuous, the pulse P3 is ignored, but if either the pulse P3 or the noise Nz can be ignored, the pulse P4 can be counted as the fourth pulse, so that the original number of pulses can be obtained. Can be counted.

<Second example>
8 (a) to 8 (g) repeatedly give three types of order information of J1 to J3 by a pulse voltage as a second example of the integrated value transmission method and the counting processing method according to the second embodiment. FIG. 8A is a timing chart for explaining the correction of the count value when the output level is lowered or the signal mixed with noise is received during signal transmission, and FIG. 8A shows the pulse signal transmitted from the pulse signal transmission device. Waveform, FIG. 8 (b) is a pulse signal waveform with a temporary drop in signal level, FIG. 8 (c) is sequence information acquired when there is a temporary drop in signal level, FIG. 8 (d). ) Is the count value properly counted even if there is a pulse defect based on the detected order information, FIG. 8 (e) is the waveform of the pulse signal with noise mixed in, and FIG. 8 (f) shows the pulse signal mixed with noise. The order information acquired when there is a pulse, and FIG. 8 (g) shows the count value appropriately counted even if there is a pulse loss based on the detected order information.

In the second example, as shown in FIG. 8A, three types of pulses Pi having different pulse heights are sequentially repeated and output. Specifically, a pulse of V1 (3.0V) is output for the sequence J1, a pulse of V2 (5.0V) is output for the pulse of the sequence J2, and a pulse of V3 (6.6V) is output for the pulse of the sequence J3.

Even with the pulse signal Ss output in such a form, as shown in FIG. 8B, a pulse signal Sr1 including a pulse P2w that cannot be detected as a pulse may be received due to signal loss or the like. In that case, as shown in FIG. 8C, the order (J3) of the pulse P3 detected next to the pulse P1 is not continuous with the order (J1) of the pulse P1, so that the pulse P3 is held for counting (step S500). Become.

However, the order (J1) of the pulse P4 detected next is discontinuous with the order (J1) of the pulse P1 which is the second time before the pulse P4. Then, assuming that one pulse exists between the pulse P3 and the pulse P1, the complement processing (step S320) is performed as shown in FIG. 8 (d), and the pulses P3 and P4 are the third pulse, respectively. Counting processing (step S400) is performed as the fourth pulse.

Further, as shown in FIG. 8E, a pulse signal Sr2 including noise Nz erroneously detected as a pulse may be received. Also at this time, as shown in FIG. 8 (f), when the order information other than J1 is acquired from the noise Nz, the count for the noise Nz is suspended (step S500). After that, when the pulse P4 is detected, the order of the pulse P3 two times before (J3) and the order of the pulse P4 this time (J4) are continuous (“Y” in step S300). Therefore, as shown in FIG. 8 (g), the pulse P4 is counted as the fourth pulse, ignoring the noise Nz.

On the other hand, when the order information of J4 is accidentally acquired from the noise Nz, the noise Nz is counted as the fourth pulse (steps S210 to S400). However, when the pulse P4 is received next time, the count is suspended (step S500) for the pulse P4, and the continuity between the sequence of the pulses P5 (J5) and the sequence of the noise Nz (J4) one after another is determined. Since the pulse P5 and the noise Nz are continuous, the pulse P4 is ignored, but if either the pulse P4 or the noise Nz can be ignored, the pulse P5 can be counted as the fifth pulse, so that the original number of pulses can be obtained. Can be counted.

<Third example>
9 (a) and 9 (b) show, as a third example of the integrated value transmission method according to the second embodiment, repeatedly assigning three types of order information of J1 to J3 according to the number of unit pulses and transmitting signals. It is a timing chart for explaining the correction of the count value when the output level drop and the signal mixed with noise are received, FIG. 9A is the sequence information to be given, and FIG. 9B is the pulse. The waveform of the pulse signal transmitted from the signal transmission device is shown.

In the third example, as shown in FIG. 9A, a pulse group Pg (indicated as Pg1, Pg2, ..., Pgm in the figure) in which a plurality of unit pulses Pu are collected is regarded as one pulse. The order information Ij is transmitted by the number of unit pulses Pu in the pulse group Pg. The width of the pulse group Pg in which a plurality of unit pulses Pu are collected is set shorter than the shortest period of the pulse interval called from the measuring device (for example, the watt hour meter 1). For example, when the pulse constant is set to 50,000 pulses per hour, the shortest period is 72 ms, and the width of one pulse group Pg is set to be less than half of that period. On the other hand, the pulse width of each unit pulse Pu in the pulse group Pg and the interval between the unit pulses Pu are determined by the resolution of the circuit that generates the pulse (pulse signal sending device 4) and the circuit that detects the pulse (pulse counting device 5). Is also set to a large value.

Specifically, the pulse width of each unit pulse Pu is 5 ms, and the interval between the unit pulses Pu is 5 ms. As shown in FIG. 9B, the pulse group Pg of the sequence J1 is a 1-unit pulse (total 5 ms), the pulse group Pg of the sequence J2 is a 2-unit pulse (15 ms in total), and the pulse group Pg of the sequence J3. Is composed of 3 unit pulses (25 ms in total). As a result, as shown in each example, even when a signal failure occurs, the continuity of the order can be confirmed, the counting can be appropriately corrected, and accurate counting can be performed.

Further, as shown in each embodiment, the form of the pulse indicating the sequence information Ij is not limited to the pulse width, the pulse voltage, or a combination thereof, but may vary depending on the number of unit pulses Pu in the pulse group Pg and the like. There is no limit, and the morphological change within the detectable range may be added.

Further, in each of the above embodiments, an example is shown in which the pulse signal transmission device 4 that detects the simple pulse signal superimposed on the service wiring 2 of the watt-hour meter 1 outputs the pulse signal to which the sequence information Ij is added. However, it is not limited to this. The measuring instrument itself may output a pulse signal to which order information Ij is added. Further, the integrated value is not necessarily limited to the measured value, and may be, for example, an integrated value as a control value for controlling the rotation angle of the motor or the like.

That is, every time a predetermined value is added to the integrated value, the repetition order information Ij may be added to the time point to generate a pulse having a different form according to the order information Ij.

As described above, according to the integrated value transmission method according to each embodiment of the present invention, the integrated value transmission method transmits the integrated value by a pulse signal, and each time a predetermined amount of the integrated value is added, the integrated value is transmitted. A pulse that outputs a pulse signal composed of a step of sequentially setting the repetition order information Ij and a pulse having a different form according to the sequentially set order information with respect to a time point (for example, a pulse emitted from the watt-hour meter 1). Since it is configured to include the signal output process, whether the count is normal at the transmission destination or whether an erroneous count such as pulse omission or misidentification has occurred is determined by whether the order is continuous or not. It can be determined.

In particular, when the repetition order information Ij is set to 3 or more types, not only the determination of normality but also the omission and the misidentification (overcounting) can be distinguished, and the counting can be automatically corrected. That is, it is possible to realize the transmission of integrated values capable of highly reliable counting without using complicated telegrams or expensive shielded cables.

Here, in the pulse signal output step, a simple circuit can be realized by forming different forms of pulse Pi depending on any of a plurality of types of pulse voltages, a plurality of types of pulse widths, and combinations thereof.

Alternatively, in the pulse signal output step, if the pulse groups Pg having different numbers of unit pulses Pu form different forms of pulse Pi, the choice of the number of repetitions is expanded.

Further, according to the counting processing method according to each embodiment of the present invention, the counting processing is performed using a pulse signal composed of a pulse to which the repetition order information Ij is given, and the pulse in the pulse signal Sr is performed. A step of detecting Pi (step S100), a step of determining the order of the pulse Pi based on the form of the detected pulse Pi (step S110), a step of counting the detected pulses (step S400), and detection. Since it is configured to include a counting determination step of determining whether or not the counting is normal depending on whether or not the order determined for the pulsed Pi is continuous with the latest pulse, due to a signal failure or the like. Since it is possible to know whether or not an erroneous count has occurred, highly reliable counting is possible without using a complicated message or an expensive shield cable.

In particular, if there are three or more types of repetition order information and it is determined in the counting determination process that the counting is not normal, one of the pulse and the latest pulse is deleted or one pulse is deleted so that the order is continuous. Since it is configured to include a counting correction process that corrects the pulse count by either of the following, it is appropriate to judge the presence or absence of erroneous counting and to distinguish between missing and erroneous counting (overcounting). Since the counting is corrected, highly reliable counting is possible without using complicated messages or expensive shielded cables.

Further, according to the pulse signal transmission device 4 according to each embodiment of the present invention, a sensor (for example, a pulse detection CT41) for detecting a signal indicating that a predetermined amount of integrated values have been added, and a signal (for example, a pulse detection CT41) are used. For example, when a pulse output to the service wiring 2) is detected, the sequence information setting unit (binary counter 44) that sequentially sets the repetition order information Ij for each signal differs from the sequence information Ij that is sequentially set. Since it is configured to include a pulse signal output unit (pulse voltage setting unit 46, pulse width setting unit 48, pulse generation unit 47) that outputs a pulse signal Ss composed of the pulse of the form, the transmission destination can be normally used. Whether counting or erroneous counting such as pulse omission or misidentification can be determined by whether the order is continuous or not.

Further, according to the pulse counting device 5 according to each embodiment of the present invention, the pulse detecting unit 51 and the pulse detecting unit 51 for detecting the pulse Pi in the pulse signal Sr composed of the pulses to which the repetition order information Ij of three or more kinds are given. For example, an order determination unit that is constructed by S / W in the microcomputer 52 and determines the order of the pulse Pi based on the detected pulse Pi, a counting unit that counts the detected pulse Pi, and a detected pulse Pi. It is determined whether or not the order determined for is continuous with the latest pulse (for example, Pi-1), and if it is not continuous, the order is continuous with the pulse so as to be continuous with the pulse. Since it is configured to have a count correction unit that corrects the pulse count by either deleting one of the pulses or complementing one pulse, it is possible to judge the presence or absence of a signal defect and misidentify it as an omission. Since appropriate counting is corrected by distinguishing (overcounting), highly reliable counting is possible without using complicated messages or expensive shielded cables.

In the pulse counting device 5, for a pulse to which two types of repetition order information are given, an erroneous counting determination unit for determining only the presence or absence of an erroneous counting may be provided instead of the counting correction unit. ..

4: Pulse signal transmission device,
5: Pulse counting device,
41: CT (sensor) for pulse detection, 44: binary counter (order information setting unit), 46: pulse voltage setting unit (pulse signal output unit), 47: pulse generation unit (pulse signal output unit), 48: pulse Width setting section (pulse signal output section),
51: Pulse detector,
52: Microcomputer (order determination unit, counting unit, counting correction unit, or counting determination unit),
Pi: pulse, Pg: pulse group, Pu: unit pulse,
Sr: (received) pulse signal, Ss: (output) pulse signal.

Claims (2)

It is an integrated value transmission and counting processing method that transmits the integrated value by a pulse signal.
Each time a predetermined amount of the integrated value is added, a step of sequentially setting three or more types of repetition order information for that time point, and
A pulse signal output step of outputting a pulse signal composed of pulses having different forms according to the sequentially set order information, and a pulse signal output process.
The step of detecting a pulse in the pulse signal and
A step of determining the order of the pulses based on the detected pulse morphology, and
The step of counting the detected pulses and
A counting determination step of determining whether or not the counting is normal depending on whether or not the order determined for the detected pulse is continuous with the latest pulse.
If it is determined in the counting determination step that the counting is not normal, the detected pulse is erroneously recognized as a pulse one time before, and if continuity with the pulse two times before can be confirmed, the above-mentioned If the pulse one time before is deleted and the signal that should be recognized as a pulse is not recognized one time before that, if it can be confirmed that there is no continuity with the pulse two times before, one complement is obtained. Counting correction process and
An integrated value transmission and counting process method comprising. A sensor that detects a signal indicating that a predetermined amount of integrated value has been added,
When the sensor detects the signal, an order information setting unit that sequentially sets three or more types of repetition order information for each signal.
A pulse signal transmission device comprising a pulse signal output step of outputting a pulse signal composed of pulses having different forms according to the sequentially set order information.
A pulse detection unit that detects a pulse in a pulse signal composed of pulses to which three or more types of repetition order information are given.
An order determination unit that determines the order of the pulses based on the detected pulse morphology.
Counting unit that counts detected pulses,
If the order determined for the detected pulse is erroneously recognized as a pulse one time before the detected pulse, and if continuity with the pulse two times before can be confirmed, the first time. If the previous pulse is deleted and the signal that should be recognized as a pulse is not recognized one time before that, if it can be confirmed that there is no continuity with the pulse two times before, one complementary count is obtained. With a pulse counter having a correction unit,
A pulse signal transmission and counting device characterized by being equipped with.

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