Measuring device for counting and displaying electric energy CF pulse output

Abstract

The utility model relates to the technical field of power distribution automation, in particular to a measuring device for counting and displaying electric energy CF pulse output, which comprises a power input interface module, a signal input interface module, a signal driving module, a signal indicating module, a decoding module, a nixie tube display module and a reset and pause module. The measuring device for counting and displaying electric energy CF pulse output can test and calibrate an active P pulse, a reactive Q pulse and a reference second pulse output by an electric energy chip, has the functions of nixie tube synchronous display, pause display and zero clearing display of the pulse number, and the network input interface and the USB / TYPE-C power supply interface are convenient for testers to improve the working efficiency.

Description

TECHNICAL FIELD

[0001] The utility model belongs to power distribution automation technical field, concretely relates to a kind of measurement device of the counting and display of electric energy CF pulse output. BACKGROUND

[0002] One technical index of distribution switch monitoring terminal FTU is electric energy parameter, it exports to external equipment in the form of CF pulse by the calculation of electric energy chip to the current, voltage parameter sampled from power grid, to monitor the state of power grid.

[0003] Whether electric energy CF pulse output is normal, precision meets requirement, is an important index in FTU equipment production process.

[0004] In the past production detection tooling, only detect whether pulse has output, cannot carry out accurate counting and digital display to CF pulse;External switch power supply is powered, and safety and convenience are poor;Manual wiring mode is used to detection input interface, and production efficiency is low. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of measurement device of the counting and display of electric energy CF pulse output, can improve test efficiency, guarantee test precision.

[0006] Based on the above technical problem, the utility model provides a kind of measurement device of the counting and display of electric energy CF pulse output, including power input interface module, signal input interface module, signal driving module, signal indicating module, decoding module and nixie tube display module;

[0007] The power input interface module is used to provide electric energy for measurement device;

[0008] The signal input interface module is connected with FTU equipment, for receiving the signal sent by FTU equipment;

[0009] The signal driving module is connected with signal input interface module, for receiving the signal sent by signal input interface module, and signal is enhanced, shaped and filtered;

[0010] The signal indicating module is connected with signal driving module, for receiving the signal sent by signal driving module, and driving led lamp to do flickering action;

[0011] The decoding module is connected with signal driving module and nixie tube display module respectively, for counting the high-low level of the signal sent by signal driving module, and driving nixie tube digital display.

[0012] In order to be connected with commonly used USB charging device, the power input interface module includes miniUSB interface and TYPE-C interface.

[0013] In order to facilitate the interface with FTU device, the signal input interface module adopts RJ45 network interface.

[0014] In a preferred embodiment of the utility model, the signal drive module adopts chip CD40106.

[0015] As preferred, the decoding module has multiple, the decoding module adopts decimal counting mode, and each decoding module is connected with several nixie tube display modules.

[0016] Further, the test device further includes reset and pause module, the reset and pause module is connected with decoding module, and is used for realizing the pause of decoding module and the zero of counting.

[0017] The utility model discloses the beneficial effect is: this pair of electric energy CF pulse output counting and display's measuring device can test and calibrate the active P pulse, reactive Q pulse, reference second pulse that electric energy chip output has, has nixie tube synchronous display, pause display, zero display pulse quantity's function, network input interface and USB / TYPE-C power supply interface facilitate test personnel to improve work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the principle block diagram of the utility model's pair of electric energy CF pulse output counting and display's measuring device;

[0019] Figure 2 It is the circuit principle diagram of the utility model's power input interface module;

[0020] Figure 3 It is the circuit principle diagram of the utility model's signal input interface module;

[0021] Figure 4 It is the circuit principle diagram of the utility model's signal drive module;

[0022] Figure 5 It is the circuit principle diagram of the utility model's signal indication module;

[0023] Figure 6 It is the circuit principle diagram of the utility model's decoding module;

[0024] Figure 7 It is the circuit principle diagram of the utility model's nixie tube display module;

[0025] Figure 8 It is the circuit principle diagram of the utility model's reset and pause module. DETAILED DESCRIPTION

[0026] The advantages and features of the utility model can be more easily understood by the people in the field, so that the protection scope of the utility model is defined more clearly and explicitly.

[0027] As Figure 1 indicated in a kind of to electric energy CF pulse output counting and display's measuring device, including power input interface module, signal input interface module, signal driving module, signal indicating module, decoding module, nixie tube display module, reset and pause module.

[0028] Specifically, as shown in Figure 2 , the power input interface module has miniUSB interface (MU-105-ACW) and TYPE-C interface (TYPEC-250C-BRP6), and commonly used USB charging device can provide electric energy for the device.

[0029] Specifically, as shown in Figure 3 , the signal input interface module uses RJ45 network interface, which is convenient for docking with the signal output of FTU equipment.

[0030] Specifically, as shown in Figure 4 , the signal driving module is connected with the signal input interface module, the signal driving module uses driving chip CD40106 to enhance and shape the signal, and then uses capacitor filtering to prevent signal distortion and external interference from affecting counting accuracy.

[0031] Specifically, as shown in Figure 5 , the signal indicating module is connected with the signal driving module, and the signal is led to the signal indicating module after being processed by the signal driving module, this module takes the signal as input source, and the triode drives led lamp to flicker, indicating whether the signal source exists and the frequency of the signal is fast or slow.

[0032] Specifically, as shown in Figure 6 , the decoding module is connected with the signal driving module and the nixie tube display module respectively, another way of the signal of the signal driving module comes to the decoding module, and the decoding module counts the high and low level of the signal, increases 1 inside the module every time the signal jumps, and drives the digital display of the nixie tube display module at the same time;One decoding module drives one 7-segment led nixie tube, as shown in Figure 7 ; the decoding module uses decimal counting mode, and the decoding module responsible for unit digit counts over 9 to generate overflow signal to the module responsible for ten digits, while itself clears display, and the same applies to the following;Each signal adopts 3 decoding modules and nixie tube display modules, and can display 999 at most, counts 999 pulses, and clears and counts again after exceeding.

[0033] Specifically, as shown inFigure 8 As shown, the reset and pause module is connected with the decoding module, and can pause the input of counting pulse and clear the counter.

[0034] The working principle is illustrated by taking one signal as an example:

[0035] As shown, the CF pulse signal SEC_IN is input from the first pin of the RJ45 signal input interface, and is connected with the capacitor C9, which filters the signal; meanwhile, SEC_IN is connected with the first pin of the signal driving device U13, which strengthens and shapes (drives and filters) the signal. Figure 4 The signal is output from the fourth pin of U13 and connected with the 9th pin of the unit digit decoding module U1-CD40110b, as shown.

[0036] Figure 6 CD40110b is a "four-in-one circuit" chip in which the counter, latch, decoder and pen segment display driver are made on the same substrate, and has a decimal adder inside. The pulse signal is input from the CPU addition input end 9th pin of CD40110b, and a carry pulse will be sent from the 10th pin when 10 pulses are accumulated, which is connected with the 9th pin of the ten digit decoding module U2, to complete the accumulation of pulse number, and the same applies to the following (counting and accumulating function).

[0037] The latch decoding output ends 1, 2, 3, 12, 13, 14 and 15 of U1 are connected with the pen segment display tubes of the LED-SM1 respectively, to display the received pulse value (digital display function), as shown. Figure 7

[0038] The fourth pin of U1 is the counting permission end, and is low in level; the fourth pin is connected with the key switch S2, as shown. Figure 8 When S2 is popped up, the fourth pin is disconnected with VCC, and the fourth pin is connected with GND through R86 to keep low level input, at which time the input of counting pulse is allowed; when S2 is pressed, the fourth pin is connected with VCC, and becomes high level, at which time the input of counting pulse is paused; the value displayed by the digital tube is the pulse value received before the pause; when S2 is popped up again, the counting function is restored, and the value is accumulated from the value at the time of pause (pause counting function).

[0039] The fifth pin of U1 is the clear end, and is high in level; the fifth pin is connected with the key switch S1, as shown. Figure 8 When S1 is popped up, the fourth pin is disconnected with VCC, and the fourth pin is connected with GND through R85 to keep low level input, and no clear action is performed. When S1 is pressed, the fourth pin is connected with VCC, and the fourth pin becomes high level, at which time the counter is cleared, and the digital tube also displays 0 (clear counting function).

[0040] ​​The SEC_IN signal is also connected to R109, which is used as a driving signal of the signal indicator light circuit, as shown in the figure. Figure 5 As shown in the figure, R109 is connected to the base of the 1st pin of the triode Q3. When the pulse signal is high, the base of Q3 is turned on, so that Q3 is in saturation state, the 3rd pin and the 2nd pin of Q3 are turned on, and current flows through the led3 light emitting diode, so that the led3 light emitting diode is lighted; when the pulse signal is low, the base of Q3 is not turned on, so that Q3 is in cut-off state, the 3rd pin and the 2nd pin of Q3 are disconnected, and the led3 is extinguished (signal display function).

[0041] Finally, it should be pointed out that: the above embodiments are only specific embodiments of the present application, which are used to illustrate the technical solutions of the present application, but not to limit it, the protection scope of the present application is not limited to this, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand: any person skilled in the art within the technical range disclosed by the present application, they can still modify or easily think of changes to the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications, changes or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and all should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A measuring device for counting and displaying the output of electrical energy CF pulses, characterized in that: The power input interface module, the signal input interface module, the signal driving module, the signal indication module, the decoding module and the nixie tube display module are connected with each other. The power input interface module is used for providing electric energy for the measuring device. The signal input interface module is connected with the FTU device and is used for receiving the signal sent by the FTU device. The signal driving module is connected with the signal input interface module and is used for receiving the signal sent by the signal input interface module and performing enhancement, shaping and filtering on the signal. The signal indication module is connected with the signal driving module and is used for receiving the signal sent by the signal driving module and driving the LED lamp to flash. The decoding module is connected with the signal driving module and the nixie tube display module respectively and is used for counting the high and low levels of the signal sent by the signal driving module and driving the nixie tube to display the number.

2. The measuring device of claim 1, wherein: The power input interface module comprises a miniUSB interface and a TYPE-C interface.

3. The measuring device of claim 1, wherein: The signal input interface module adopts an RJ45 network interface.

4. The measuring device of electrical energy CF pulse output count and display according to claim 1, characterized in that: The signal driving module adopts a chip CD40106.

5. The measuring device of electrical energy CF pulse output count and display according to claim 1, characterized in that: The decoding module adopts a decimal counting mode.

6. The measuring device of claim 5, wherein: The decoding module has a plurality of decoding modules, and each decoding module is connected with a plurality of nixie tube display modules.

7. The measuring device of electric energy CF pulse output count and display according to claim 1 or 5, characterized in that: The reset and pause module is connected with the decoding module and is used for realizing the pause and counting zero of the decoding module.

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