Binding type electrified induction alarm

Abstract

The utility model discloses a binding type electrified induction alarm, which comprises a binding carrier and an alarm device, the binding carrier is used for bearing the alarm device, and the alarm device comprises a power supply loop, an electromagnetic induction signal acquisition module, a signal amplification and interference signal filtering module and an output alarm module, the signal amplification and interference signal filtering module comprises an in-phase proportion operation circuit, an interference signal filtering circuit and an anti-phase proportion operation circuit which are connected in sequence. The beneficial effects of the utility model are that the binding type cable alarm device is fixed on a cable in a binding manner, the operation difficulty of constructors is reduced, only magnetic induction signals of the bound cable can be sensed, the alarm precision is high, and false alarm in a complex electricity utilization environment is avoided; a constructor can intuitively perceive whether the working position of the constructor is electrified or not, the fear and panic psychology of the constructor is greatly reduced or directly avoided, once an upstream circuit breaker is switched on by misoperation, the constructor can perceive and avoid the risk of electric shock at the first time, and property loss and personal injury caused by misoperation are effectively avoided; the device is light in weight, convenient to carry, simple to operate and flexible to use.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric shock prevention alarm, and in particular relates to a bundled electric induction alarm. Background Art

[0002] Some large clean workshops usually need to temporarily shut down some circuits during construction and later maintenance before construction. This is because the power outage information cannot ensure that every relevant person is notified. The staff affected by the power outage may mistakenly think that it is a circuit breaker tripping fault and close the circuit breaker. The construction personnel downstream of the circuit are unaware of the live construction, which greatly increases the risk of electric shock. The power construction environment of large clean workshops is complex, requiring high-altitude operations and operations in confined spaces. There are a large number of pipelines near these work areas, and there are various dangerous goods in the pipelines, such as various harmful chemicals, strong acids, strong alkalis, special gases, etc. Once an electric shock accident occurs, it is likely to cause secondary damage (such as falling from a high altitude, rupture and leakage of nearby pipelines, damage to expensive instruments, etc.), causing major personal safety accidents and major property losses. At present, all electric alarms are close-range induction alarms. During the secondary distribution period of large clean workshop construction, the main system project has been completed, and there are a large number of pipelines with dangerous goods on site. Construction work requires temporary power outages, and the construction location also requires climbing or being in a confined space. Construction workers will have great psychological pressure, and they will panic when they cannot intuitively detect whether the construction circuit is energized. Even for relatively simple construction content, due to the high psychological pressure and panic, construction workers are prone to operating errors, resulting in major personal safety accidents and major property losses. Large clean workshops are densely populated with electrical equipment, and since the above-mentioned alarm will sound as long as it is close to the power supply, the false alarm rate is very high. The above-mentioned alarm also needs to be held in hand, and it is difficult for construction workers to hold the alarm while working. This type of alarm is not suitable for complex construction environments such as large clean workshops. Utility Model Content

[0003] In view of this, the purpose of the utility model is to provide a bundled electric induction alarm to solve the deficiencies in the prior art.

[0004] In order to achieve the above object, the utility model is implemented by the following technical solutions:

[0005] Provided is a bundled electrical induction alarm, comprising a bundled carrier and an alarm device, wherein the bundled carrier is used to carry the alarm device, and the alarm device comprises a power supply circuit and an electromagnetic induction signal acquisition module, a signal amplification and interference signal filtering module, and an output alarm module connected in sequence, and the signal amplification and interference signal filtering module comprises an in-phase proportional operation circuit, an interference signal filtering circuit, and an inverted proportional operation circuit connected in sequence.

[0006] As for the bundled electric induction alarm, the alarm device is in the shape of a dial, and the bundling carrier includes a long strip of cable ties, and the cable ties include a first connecting belt and a second connecting belt. The first connecting belt and the second connecting belt are respectively arranged at the opposite ends of the alarm device, and the first connecting belt is provided with a first connecting piece, and the second connecting belt is provided with a second connecting piece compatible with the first connecting piece.

[0007] For example, in the bundled electric induction alarm, the first connecting member is a card hole arranged along the length direction of the first connecting belt, and the second connecting member is a card slot with a card pin provided at the end of the second connecting belt.

[0008] As for the bundled electric induction alarm, the power supply circuit includes a power supply, a travel switch and a power indicator light. One end of the travel switch is connected to the positive pole of the power supply, and the other end is connected to the common point of the positive poles of other electrical power supplies. One end of the power indicator light is connected to the common point of the positive pole of the power supply, and the other end is connected to the negative pole of the power supply.

[0009] As in the bundled electric induction alarm, the electromagnetic induction signal acquisition module includes a first resistor, a mutual inductor and a second resistor which are connected in series in sequence.

[0010] As for the bundled inductive alarm, the in-phase proportional operational circuit includes a first capacitor, a third resistor, a fourth resistor, a fifth resistor and a first operational amplifier, one end of the first capacitor is connected to the mutual inductor, and the other end is connected to the positive input terminal of the first operational amplifier, one end of the third resistor is connected to the negative input terminal of the first operational amplifier, and the other end is connected to the common point of the positive pole of the power supply, one end of the fourth resistor is connected to the negative input terminal of the first operational amplifier, and the other end is connected to the negative pole of the power supply, one end of the fifth resistor is connected to the negative input terminal of the first operational amplifier, and the other end is connected to the output terminal of the first operational amplifier, the +V terminal of the first operational amplifier is connected to the common point of the positive pole of the power supply, and the -V terminal of the first operational amplifier is connected to the negative pole of the power supply.

[0011] As for the bundled inductive alarm, the interference signal filtering circuit includes a first diode, a second capacitor and a sixth resistor, the anode of the first diode is connected to the output end of the first operational amplifier, the cathode of the first diode is connected to one end of the second capacitor, the other end of the second capacitor is connected to the negative electrode of the power supply, and the sixth resistor is connected to the cathode of the first diode, and the other end is connected to the negative electrode of the power supply.

[0012] As for the bundled electric induction alarm, the inverting proportional operational circuit includes a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, a third capacitor and a second operational amplifier, the negative input terminal of the second operational amplifier is connected to the cathode of the first diode through the seventh resistor, one end of the eighth resistor is connected to the common point of the positive pole of the power supply, and the other end is connected to the positive input terminal of the second operational amplifier, one end of the ninth resistor is connected to the positive input terminal of the second operational amplifier, and the other end is connected to the negative pole of the power supply, one end of the tenth resistor is connected to the positive input terminal of the second operational amplifier, and the other end is connected to the output terminal of the second operational amplifier, and one end of the third capacitor is connected to the output terminal of the second operational amplifier.

[0013] As for the bundled inductive alarm, the output alarm module includes a test button, an alarm chip, a second diode, a buzzer and an alarm indicator light; the other end of the third capacitor is connected to the signal input end of the alarm chip, one end of the test button is connected to the signal input end of the alarm chip, and the other end is connected to the negative electrode of the power supply; the anode of the second diode is connected to the output end of the alarm chip; one end of the buzzer is connected to the cathode of the second diode, and the other end is connected to the negative electrode of the power supply; one end of the alarm indicator light is connected to the cathode of the second diode, and the other end is connected to the negative electrode of the power supply.

[0014] The beneficial effects of the technical solution of the utility model are:

[0015] 1. The bundled type is fixed on the cable, which reduces the difficulty of operation for construction workers. It will only sense the magnetic induction signal of the bundled cable, and the alarm is more accurate, avoiding false alarms in complex power usage environments; 2. Construction workers will fix the electric induction alarm near the construction location, and can intuitively detect whether there is electricity at their work location, which greatly reduces or directly avoids the fear and panic of construction workers.

[0016] Once the upstream circuit breaker is closed by mistake, it can be detected immediately to avoid the risk of electric shock, effectively avoiding property losses and personal injuries caused by misoperation;

[0017] 3. The equipment is light, easy to carry, simple to operate and flexible to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To further illustrate the above-mentioned purpose, structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings.

[0019] Figure 1a , Figure 1b They are respectively three-dimensional views of the preferred embodiment of the utility model from two different angles;

[0020] Figure 2 A top view of a preferred embodiment of the utility model;

[0021] Figure 3 This is the alarm electrical schematic diagram of the preferred embodiment of the utility model;

[0022] Figure 4 This is a schematic diagram of the key switch of a preferred embodiment of the utility model;

[0023] In the figure: 1. Alarm device; 2. Power supply circuit; 3. Electromagnetic induction signal acquisition module; 4. Signal amplification and interference signal filtering module; 5. Output alarm module; 6. First connecting belt; 7. Second connecting belt; 8. First connecting piece; 9. Second connecting piece; 10. On / off key; 11. Test button; 12. Alarm indicator light. DETAILED DESCRIPTION

[0024] The terms "utility model" and "the present utility model" used in this specification are intended to refer broadly to all subject matter of this specification and any patent claims below. Statements containing these terms should not be understood to limit the subject matter described herein or to limit the meaning or scope of any patent claim below. In addition, this specification does not attempt to describe or limit the subject matter covered by any claim of any specific component, paragraph, statement or figure of this application. The subject matter should be understood with reference to the entire specification, all drawings and any claims below. The present utility model may have other embodiments and be practiced or implemented in other ways. Moreover, it should be understood that the wording and terminology used herein are for illustrative purposes and should not be considered as limiting.

[0025] The details of the present invention will now be discussed with reference to the accompanying drawings which illustrate the present invention by way of example only. In the accompanying drawings, similar features or components may be marked with the same reference numerals.

[0026] The use of "including", "having" and "comprising" and variations thereof herein is meant to include the items listed thereafter and their equivalents and additional items. Although reference may be made to directions such as above, below, upward, downward, backward, bottom, top, front, back, etc. in describing the drawings, for convenience, reference is made relative to the drawings. These directions are not intended to literally accept or limit the present invention in any form. In addition, terms such as "first", "second", "third", etc. are used herein for illustrative purposes and are not intended to indicate or imply importance or significance.

[0027] See also Figure 1a , Figure 1b , Figure 2 As shown, the utility model of the bundled electric induction alarm includes a bundle carrier and an alarm device 1, the bundle carrier is used to carry the alarm device 1, see Figure 3As shown, the alarm device 1 includes a power supply circuit 2 and an electromagnetic induction signal acquisition module 3, a signal amplification and interference signal filtering module 4, and an output alarm module 5 connected in sequence. The signal amplification and interference signal filtering module 3 includes an in-phase proportional operation circuit, an interference signal filtering circuit, and an inverted proportional operation circuit connected in sequence.

[0028] Continue to view Figure 1a , Figure 1b , Figure 2 As shown, in a preferred embodiment, the alarm device 1 is in the shape of a dial, and the binding carrier includes a long strip of cable ties, which include a first connecting strap 6 and a second connecting strap 7. The first connecting strap 6 and the second connecting strap 7 are respectively arranged at opposite ends of the alarm device 1. The first connecting strap 6 is provided with a first connecting piece 8, and the second connecting strap 7 is provided with a second connecting piece 9 that is compatible with the first connecting piece 8.

[0029] Furthermore, the first connecting member 8 is a clamping hole arranged along the length direction of the first connecting belt 6 , and the second connecting member 9 is a clamping socket with a clamping pin provided at the end of the second connecting belt 7 .

[0030] Continue to view Figure 3 As shown, the power circuit 2 includes a power supply U, a travel switch SB1 (i.e., a switch key 10 located on the dial, see Figure 1a , Figure 1b , Figure 2 and Figure 4 As shown) and the power indicator HL2, one end of the limit switch SB1 is connected to the positive pole of the power supply U, and the other end is connected to the common point of the positive poles of other electrical appliances. One end of the power indicator HL2 is connected to the common point of the positive pole of the power supply U, and the other end is connected to the negative pole of the power supply U. When the limit switch SB1 is closed, if the power indicator HL2 is on, it proves that the power supply U is normal. If the power indicator HL2 is off, it proves that the power supply U is abnormal.

[0031] The electromagnetic induction signal acquisition module 3 includes a first resistor R1, a mutual inductor TA1 and a second resistor R2 connected in series. The mutual inductor TA1 can sense the induced electromotive force generated when the bundled cables are powered on, and is used to detect whether the bundled cables are charged, and convert the cable power status into an electromotive force signal and input it into the circuit.

[0032] The in-phase proportional operation circuit includes a first capacitor C1, a third resistor R3, a fourth resistor R4, a fifth resistor R5 and a first operational amplifier IC1a, one end of the first capacitor C1 is connected to the mutual inductor TA1, and the other end is connected to the positive input terminal of the first operational amplifier IC1a, one end of the third resistor R3 is connected to the negative input terminal of the first operational amplifier IC1a, and the other end is connected to the common point of the positive electrode of the power supply U, one end of the fourth resistor R4 is connected to the negative input terminal of the first operational amplifier IC1a, and the other end is connected to the negative electrode of the power supply U, one end of the fifth resistor R5 is connected to the negative input terminal of the first operational amplifier IC1a, and the other end is connected to the output terminal of the first operational amplifier IC1a, the +V terminal of the first operational amplifier IC1a is connected to the common point of the positive electrode of the power supply U, and the -V terminal of the first operational amplifier IC1a is connected to the negative electrode of the power supply U. When the first capacitor C1 inputs the sensing signal into the first operational amplifier IC1a, it can effectively amplify the smaller signal on the basis of maintaining the original phase, and has low energy requirements for the input signal, and it is easier to realize the conversion of the sensing signal into a circuit signal.

[0033] The interference signal filtering circuit includes a first diode D1, a second capacitor C2 and a sixth resistor R6, wherein the anode of the first diode D1 is connected to the output end of the first operational amplifier IC1a, the cathode of the first diode D1 is connected to one end of the second capacitor C2, the other end of the second capacitor C2 is connected to the negative electrode of the power supply U, the sixth resistor R6 is connected to the cathode of the first diode D1, and the other end is connected to the negative electrode of the power supply U, and the cathode of the first diode D1 is connected to the input end of the reverse proportional operation circuit. When the first operational amplifier IC1a has a high potential output, the first diode D1 is unidirectionally conducted, and the second capacitor C2 absorbs the clutter signal that does not meet the setting, and the connection of the first diode D1 and the second capacitor C2 can effectively prevent the occurrence of false alarms.

[0034] The inverting proportional operation circuit includes a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, a third capacitor C3 and a second operational amplifier IC1b, wherein the negative input terminal of the second operational amplifier IC1b is connected to the cathode of the first diode D1 through the seventh resistor R7, one end of the eighth resistor R8 is connected to the common point of the positive electrode of the power supply U, and the other end is connected to the positive input terminal of the second operational amplifier IC1b, one end of the ninth resistor R9 is connected to the positive input terminal of the second operational amplifier IC1b, and the other end is connected to the negative electrode of the power supply U, one end of the tenth resistor R10 is connected to the positive input terminal of the second operational amplifier IC1b, and the other end is connected to the output terminal of the second operational amplifier IC1b, and one end of the third capacitor C3 is connected to the output terminal of the second operational amplifier IC1b. The inverting proportional operation circuit inverts and amplifies the high-potential output signal of the interference signal filtering circuit, so that the output of the second operational amplifier IC1b is low-potential, and the third capacitor C3 can continuously and stably output the signal, thereby triggering the threshold of the subsequent alarm chip IC2 to send out an alarm signal.

[0035] The output alarm module includes a test button SA1 (i.e., a test button 11 located on the dial), an alarm chip IC2, a second diode D2, a buzzer HA1, and an alarm indicator light HL1 (i.e., an alarm indicator light 12 located on the dial). The other end of the third capacitor C3 is connected to the signal input end of the alarm chip IC2, one end of the test button SA1 is connected to the signal input end of the alarm chip IC2, and the other end is connected to the negative electrode of the power supply U. The anode of the second diode D2 is connected to the output end of the alarm chip IC2, one end of the buzzer HA1 is connected to the cathode of the second diode D2, and the other end is connected to the negative electrode of the power supply U. One end of the alarm indicator light HL1 is connected to the cathode of the second diode D2, and the other end is connected to the negative electrode of the power supply U. The second diode D2 is unidirectionally conductive and can effectively protect the alarm chip IC2. When the third capacitor C3 or the test button SA1 inputs a signal to the alarm chip IC2, when the threshold is reached, the alarm indicator light HL1 flashes and the buzzer HA1 emits a "beep" and "beep" alarm sound.

[0036] The utility model has a reasonable design of anti-electric shock alarm circuit, strong anti-interference ability and reliable operation. Turn on the right switch of the utility model, the green power indicator light will light up, proving that the power supply of the alarm is working properly, then press the blue test button on the left, the alarm indicator light will flash and the buzzer will make a "beep" "beep" alarm sound. After the alarm is tested normally, the alarm can be tied to the cable of the temporary power outage to work with power alarm.

[0037] The utility model bundled electric alarm device collects line electromagnetic signals through mutual inductor TA1, inputs the signals into input capacitor C1, and effectively amplifies small signals while maintaining the original phase through operational amplifiers IC1a and IC1b, with low requirements on input signal energy. The signal reaching the threshold is transmitted to alarm chip IC2 through output capacitor C3, and IC2 is turned on after receiving the signal, and the buzzer alarm and prompt light flash, giving out an alarm.

[0038] The above are only preferred embodiments of the present invention, and do not limit the implementation mode and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A bundled electric induction alarm, characterized in that: It includes a bundling carrier and an alarm device, the bundling carrier is used to carry the alarm device, the alarm device includes a power supply circuit and an electromagnetic induction signal acquisition module, a signal amplification and interference signal filtering module, and an output alarm module connected in sequence, the signal amplification and interference signal filtering module includes an in-phase proportional operation circuit, an interference signal filtering circuit, and an inverted proportional operation circuit connected in sequence.

2. The bundled electric induction alarm as claimed in claim 1, characterized in that: The alarm device is in the shape of a dial, and the binding carrier includes a long strip of cable ties, which include a first connecting strap and a second connecting strap. The first connecting strap and the second connecting strap are respectively arranged at opposite ends of the alarm device. The first connecting strap is provided with a first connecting piece, and the second connecting strap is provided with a second connecting piece that is compatible with the first connecting piece.

3. The bundled electric induction alarm as claimed in claim 2, characterized in that: The first connecting member is a clamping hole arranged along the length direction of the first connecting belt, and the second connecting member is a clamping socket with a clamping pin arranged at the end of the second connecting belt.

4. The bundled electric induction alarm as claimed in claim 1 or 2, characterized in that: The power supply circuit includes a power supply, a travel switch and a power indicator light. One end of the travel switch is connected to the positive pole of the power supply, and the other end is connected to the common point of the positive poles of other electrical power supplies. One end of the power indicator light is connected to the common point of the positive poles of the power supply, and the other end is connected to the negative pole of the power supply.

5. The bundled electric induction alarm as claimed in claim 4, characterized in that: The electromagnetic induction signal acquisition module includes a first resistor, a mutual inductor and a second resistor which are connected in series in sequence.

6. The bundled electric induction alarm as claimed in claim 5, characterized in that: The in-phase proportional operational circuit includes a first capacitor, a third resistor, a fourth resistor, a fifth resistor and a first operational amplifier, one end of the first capacitor is connected to the mutual inductor, and the other end is connected to the positive input terminal of the first operational amplifier, one end of the third resistor is connected to the negative input terminal of the first operational amplifier, and the other end is connected to the common point of the positive electrode of the power supply, one end of the fourth resistor is connected to the negative input terminal of the first operational amplifier, and the other end is connected to the negative electrode of the power supply, one end of the fifth resistor is connected to the negative input terminal of the first operational amplifier, and the other end is connected to the output terminal of the first operational amplifier, the +V terminal of the first operational amplifier is connected to the common point of the positive electrode of the power supply, and the -V terminal of the first operational amplifier is connected to the negative electrode of the power supply.

7. The bundled electric induction alarm as claimed in claim 6, characterized in that: The interference signal filtering circuit includes a first diode, a second capacitor and a sixth resistor, the anode of the first diode is connected to the output end of the first operational amplifier, the cathode of the first diode is connected to one end of the second capacitor, the other end of the second capacitor is connected to the negative electrode of the power supply, and the sixth resistor is connected to the cathode of the first diode, and the other end is connected to the negative electrode of the power supply.

8. The bundled electric induction alarm as claimed in claim 7, characterized in that: The inverting proportional operational circuit includes a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, a third capacitor and a second operational amplifier, the negative input terminal of the second operational amplifier is connected to the cathode of the first diode through the seventh resistor, one end of the eighth resistor is connected to the common point of the positive electrode of the power supply, and the other end is connected to the positive input terminal of the second operational amplifier, one end of the ninth resistor is connected to the positive input terminal of the second operational amplifier, and the other end is connected to the negative electrode of the power supply, one end of the tenth resistor is connected to the positive input terminal of the second operational amplifier, and the other end is connected to the output terminal of the second operational amplifier, and one end of the third capacitor is connected to the output terminal of the second operational amplifier.

9. The bundled electric induction alarm as claimed in claim 8, characterized in that: The output alarm module includes a test button, an alarm chip, a second diode, a buzzer and an alarm indicator light. The other end of the third capacitor is connected to the signal input end of the alarm chip, one end of the test button is connected to the signal input end of the alarm chip, and the other end is connected to the negative electrode of the power supply. The anode of the second diode is connected to the output end of the alarm chip, one end of the buzzer is connected to the cathode of the second diode, and the other end is connected to the negative electrode of the power supply. One end of the alarm indicator light is connected to the cathode of the second diode, and the other end is connected to the negative electrode of the power supply.

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