CN219107420U

CN219107420U - Signal restoring voltage signal input unit

Info

Publication number: CN219107420U
Application number: CN202223600510.1U
Authority: CN
Inventors: 林星晨; 虞建用; 汪龙; 潘和; 徐超; 王成
Original assignee: Blue Whale Intelligent Technology Wenzhou Co ltd
Current assignee: Blue Whale Intelligent Technology Wenzhou Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-05-30
Anticipated expiration: 2032-12-30

Abstract

The utility model discloses a signal reduction voltage signal input unit, which comprises an input end P1, four conversion units and four output interfaces, wherein the conversion units comprise an electrostatic resistor D2, a current limiting resistor R2, a pull-down resistor R5, a filter C1, an opto-coupler switch J1, a pull-up resistor R1 and a current limiting resistor R4.

Description

Signal restoring voltage signal input unit

Technical Field

The utility model relates to the technical field of signal reduction circuits, in particular to a signal reduction voltage signal input unit.

Background

In the water supply to residents, the relevant departments need to collect water supply, the collection module collects information including total water supply, time period water supply and the like, and the self-repairing of the system is realized by the aid of a repairing means of signal restoration.

In the existing signal reduction circuit, an antistatic means is not generally arranged, because static electricity is carried on a user, and in winter at low temperature, static electricity is easily carried by surrounding articles, so that in actual use, once static electricity current enters the signal reduction circuit, the voltage in the original circuit is changed to cause short circuit, the normal operation of the whole signal reduction circuit is influenced, and even the normal operation and self-repair of the whole system circuit are influenced.

The present utility model has been made in view of the above problems.

Disclosure of Invention

The utility model provides a signal reduction voltage signal input unit capable of stabilizing circuit voltage, which solves the problem of unstable communication in the use process in the prior art.

The technical scheme of the utility model is realized as follows: the utility model provides a signal reduction voltage signal input unit, includes input P1, four conversion units, four output interfaces, the conversion unit is including electrostatic impedance ware D2, electric current limiting resistor R2, pull-down resistor R5, wave filter C1, opto-coupler switch J1, pull-up resistor R1, electric current limiting resistor R4, electrostatic impedance ware D2 input is connected with input P1 electricity, electrostatic impedance ware D2's output is connected with pull-down resistor R5's input electricity, electric current limiting resistor R2's input is connected with electrostatic impedance ware D2's input electricity, electric current limiting resistor R2's output is connected with pull-down resistor R5's input electricity, pull-down resistor R5 is connected with wave filter C1 electricity, wave filter C1 is connected with opto-coupler switch J1 electricity, opto-coupler switch J1 is connected with pull-up resistor R1 electricity, pull-up resistor R1 is connected with electric current limiting resistor R4 electricity, electric current limiting resistor R4 is connected with output interface electricity, output interface is connected with outside monolithic electricity.

The signal input unit for signal recovery voltage according to the present utility model as described above, further: five interfaces from one to five are arranged in the input end P1, the interfaces from one to four are respectively and electrically connected with the four electrostatic resistors D2, and the interfaces from five are electrically connected with the public grounding end.

The signal input unit for signal recovery voltage according to the present utility model as described above, further: one of the circuits of the filter C1 is electrically connected to a common ground.

The signal input unit for signal recovery voltage according to the present utility model as described above, further: the input end of the optocoupler switch J1 is electrically connected with a light emitting diode, and the output end of the optocoupler switch J1 is electrically connected with a triode.

The signal input unit for signal recovery voltage according to the present utility model as described above, further: the four output interfaces are IOIN0, IOIN1, IOIN2 and IOIN3 respectively.

In summary, the beneficial effects of the utility model are as follows:

1. the utility model adopts the structure that an electrostatic resistor (ESD) is additionally arranged in circuit hardware, and the diode is arranged at the input end of the circuit, thus, in the normal working process of an electric appliance, the ESD only shows the capacitance resistance characteristic with extremely low capacitance value (generally < 5 pf), the normal electric appliance characteristic is not influenced, the signal and data transmission of an electronic product are not influenced, and because of the specificity of the constitution materials of the ESD electrostatic resistor, the ESD always absorbs and dissipates static, namely, the ESD is shown as a charging and discharging process, so as to realize the electrostatic protection of equipment.

2. The utility model can limit the passing current through the current limiting resistor R2 and the current limiting resistor R4, thereby realizing the purpose of converting high electricity into low electricity.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic diagram of a signal recovery circuit according to the present utility model;

fig. 2 is a schematic diagram of a signal recovery circuit according to the present utility model.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to fig. 1-2 of the embodiments of the present utility model, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples

The signal reduction voltage signal input unit comprises an input end P1, four conversion units and four output interfaces, wherein the conversion units comprise an electrostatic resistor D2, a current limiting resistor R2, a pull-down resistor R5, a filter C1, an optocoupler switch J1, a pull-up resistor R1 and a current limiting resistor R4, the input end of the electrostatic resistor D2 is electrically connected with the input end P1, the output end of the electrostatic resistor D2 is electrically connected with the input end of the pull-down resistor R5, the input end of the current limiting resistor R2 is electrically connected with the input end of the electrostatic resistor D2, the output end of the current limiting resistor R2 is electrically connected with the input end of the pull-down resistor R5, the pull-down resistor R5 is electrically connected with the filter C1, the filter C1 is electrically connected with the optocoupler switch J1, the pull-up resistor R1 is electrically connected with the current limiting resistor R4, the current limiting resistor R4 is electrically connected with the output interface, and the output interface is electrically connected with a single chip;

it should be noted that, the voltage of the voltage input signal is 12-24V, wherein the default resistance value of the pull-up resistor R1 is 1 when the pull-up resistor R5 is not in operation, and the default resistance value of the pull-down resistor R5 is 0 when the pull-up resistor R1 is not in operation;

specifically, in the signal recovery operation, the current signal enters from the input end P1 and is divided into four paths to pass through four conversion units respectively, then passes through four output interfaces and finally is transmitted to the terminal, which is the prior art, and not excessively described herein, and other grounded circuits in the circuit are the prior art and are regarded as default grounding;

in the following, an example will be described by taking one path of conversion unit as an example, referring to fig. 2, after a current signal enters, the current signal enters the electrostatic resistor D2 first, if the current voltage is normal, the electrostatic resistor D2 does not work, then the current passes through the current limiting resistor R2, the current is limited under the action of the current limiting resistor R2, so that the current flowing through the current limiting resistor R2 can be ensured not to burn the optocoupler switch J1, then the current passes through the pull-down resistor R5, then the current passes through the filter C1, then enters from the light emitting diode at the left end of the optocoupler switch J1, flows out from the triode at the right side after passing through the whole optocoupler switch J1, and converts the input current signal into a signal suitable for a receiving terminal, namely a singlechip, wherein the singlechip is in the prior art, the user can select an adaptive model according to the actual requirement, and the current can be input to the pull-up resistor R1 and finally is input to the singlechip through the current limiting resistor R4, so that the purposes of high-electricity conversion and low-electricity can be realized, wherein other details of the circuits are in the prior art.

Therefore, an electrostatic resistor (ESD) is added in circuit hardware, and the diode is arranged at the input end of the circuit, so that in the normal working process of an electric appliance, the ESD only shows the capacitance resistance characteristic with extremely low capacitance value (generally < 5 pf), the normal electric appliance characteristic is not influenced, the signal and data transmission of an electronic product are not influenced, and because of the specificity of the structural materials of the ESD electrostatic resistor, the ESD always absorbs and dissipates static, namely, the ESD is shown as a charging and discharging process, so that the electrostatic protection of equipment is realized.

It should be noted that, the functions to be realized by each hardware in the present utility model are supported by a large number of mature technologies, which belongs to the prior art, and the essence of the present utility model is to optimally combine the existing hardware and the connection mode thereof for specific application occasions, so as to meet the adaptation requirements of the specific application occasions and solve the problems (not related to the improvement of the internal software of the hardware) presented in the background art.

Five interfaces from one to five are arranged in the input end P1, the interfaces from one to four are respectively and electrically connected with the four electrostatic resistors D2, and the interfaces from five are electrically connected with the public grounding end.

Specifically, four interfaces are respectively connected with four conversion units in a butt joint mode, so that signals can be divided into four paths in a primary-secondary mode, signal pressure is shared, working pressure of the system is reduced, the adaptation service life of the system is prolonged, and the system is the prior art.

One of the circuits of the filter C1 is electrically connected to a common ground.

In particular, the method comprises the steps of,

the input end of the optocoupler switch J1 is electrically connected with a light emitting diode, and the output end of the optocoupler switch J1 is electrically connected with a triode.

Specifically, the optocoupler switch can amplify signals, so that signals received by the terminal are more comprehensive and accurate.

The four output interfaces are IOIN0, IOIN1, IOIN2 and IOIN3 respectively.

Specifically, the four output interfaces correspond to the four input interfaces, and the signals are divided into four paths in a main and secondary mode, so that signal supply can be provided for other terminals, and the user can use the device to relieve constipation.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. A signal-reducing voltage signal input unit, characterized in that: the three-phase electrostatic transformer comprises an input end P1, four conversion units and four output interfaces, wherein the conversion units comprise an electrostatic resistor D2, a current limiting resistor R2, a pull-down resistor R5, a filter C1, an optocoupler switch J1, a pull-up resistor R1 and a current limiting resistor R4, the input end of the electrostatic resistor D2 is electrically connected with the input end P1, the output end of the electrostatic resistor D2 is electrically connected with the input end of the pull-down resistor R5, the input end of the current limiting resistor R2 is electrically connected with the input end of the electrostatic resistor D2, the output end of the current limiting resistor R2 is electrically connected with the input end of the pull-down resistor R5, the pull-down resistor R5 is electrically connected with the filter C1, the filter C1 is electrically connected with the optocoupler switch J1, the pull-up resistor R1 is electrically connected with the current limiting resistor R4, the current limiting resistor R4 is electrically connected with the output interface, and the output interface is electrically connected with an external single-chip microcomputer.

2. A signal-reducing voltage signal input unit according to claim 1, characterized in that: five interfaces from one to five are arranged in the input end P1, the interfaces from one to four are respectively and electrically connected with the four electrostatic resistors D2, and the interfaces from five are electrically connected with the public grounding end.

3. A signal-reducing voltage signal input unit according to claim 2, characterized in that: one of the circuits of the filter C1 is electrically connected to a common ground.

4. A signal-reducing voltage signal input unit according to claim 3, characterized in that: the input end of the optocoupler switch J1 is electrically connected with a light emitting diode, and the output end of the optocoupler switch J1 is electrically connected with a triode.

5. The signal-reducing voltage signal input unit according to claim 4, wherein: the four output interfaces are IOIN0, IOIN1, IOIN2 and IOIN3 respectively.