CN204347526U - Mine digital coding Long-distance Control voice acousto-optic case circuit - Google Patents
Mine digital coding Long-distance Control voice acousto-optic case circuit Download PDFInfo
- Publication number
- CN204347526U CN204347526U CN201420852368.6U CN201420852368U CN204347526U CN 204347526 U CN204347526 U CN 204347526U CN 201420852368 U CN201420852368 U CN 201420852368U CN 204347526 U CN204347526 U CN 204347526U
- Authority
- CN
- China
- Prior art keywords
- resistance
- pin
- electric capacity
- circuit
- voice
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Reverberation, Karaoke And Other Acoustics (AREA)
Abstract
The utility model discloses a kind of mine digital coding Long-distance Control voice acousto-optic case circuit, comprise coding-control output circuit, power module, control signal separation circuit, master cpu, address gauge tap, voice recording and playing circuit, light reports to the police driving and display circuit, voice playing device.The utility model has the beneficial effect that alarm voice is variable, circuit reliability is high, device communication response is flexible, automatically identify two-wire system polarity.
Description
Technical field
The utility model relates to a kind of mining voice acousto-optic case, particularly relates to a kind of mining voice acousto-optic case circuit with numerical coding Long-distance Control, belongs to mining equipment technical field.
Background technology
The phonetic alarm of current down-hole voice acousto-optic case is all the voice that content is single, for example: gas exceeding limit, dangerous no through traffic, ventilating fan stopped etc., each voice acousto-optic case can not convert alarm content, lack the feature used flexibly, again because voice acousto-optic case is wire controlled, circuit is reported to the police after connecting, and lacks remote control means.
Utility model content
The purpose of this utility model is to provide a kind of mine digital coding Long-distance Control voice acousto-optic case circuit, two coring circuit superposition manipulations of powering are encoded, have holographic broadcast remote multi-path controlling functions, device is independently differentiated and responsive control signal by address, realizes audio alert content-variable.
The purpose of this utility model is achieved by the following technical programs:
A kind of mine digital coding Long-distance Control voice acousto-optic case circuit, comprise coding-control output circuit 1, power module 2, control signal separation circuit 3, master cpu 4, address gauge tap 5, voice recording and playing circuit 6, light is reported to the police and is driven and display circuit 7, voice playing device 8, wherein coding-control output circuit 1 is connected with power module 2, coding-control output circuit 1 is connected with control signal separation circuit 3, power module 2 is connected with master cpu 4, power module 2 and light are reported to the police to drive and are connected with display circuit 7, power module 2 is connected with voice playing device 8, control signal separation circuit 3 is connected with master cpu 4, address gauge tap 5 is connected with master cpu 4, master cpu 4 is connected with voice recording and playing circuit 6, voice recording is reported to the police to drive with playing circuit 6 and light and is connected with display circuit 7, voice recording is connected with voice playing device 8 with playing circuit 6.
The purpose of this utility model can also be realized further by following technical measures:
Aforementioned mine digital coding Long-distance Control voice acousto-optic case circuit, wherein control signal separation circuit 3 is by resistance R1, resistance R3, diode D5, resistance R30, half adder CD4070 forms, coding-control output circuit 1 output terminal is connected with resistance R1 one end, another output terminal of coding-control output circuit 1 is connected with the negative pole of diode D5, the positive pole of diode D5 is connected with resistance R30 one end, the resistance R1 other end and the resistance R30 other end are connected in parallel in resistance R3 one end, the resistance R3 other end is connected with 1 pin of half adder CD4070, 2 pin of half adder CD4070 are connected with VCC power supply, 3 pin of half adder CD4070 are connected with 9 pin of half adder CD4070, 8 pin of half adder CD4070 are connected with an I/O of master cpu 4, 10 pin of half adder CD4070 are connected with an I/O mouth of master cpu 4.
Aforementioned mine digital coding Long-distance Control voice acousto-optic case circuit, wherein voice recording and playing circuit 6 are by pronounciation processing chip U1, switch J1, Audio input jack J2, resistance R4, resistance R5, resistance R8, resistance R10, resistance R11, resistance R12, resistance R14, electric capacity C6, electric capacity C8, electric capacity C11, electric capacity C12, electric capacity C16, electric capacity C17, electrochemical capacitor C18, electrochemical capacitor C20, LED 1 forms, 8 I/O delivery outlets of master cpu 4 respectively with 1 of pronounciation processing chip U1, 2, 3, 4, 5, 6, 9, 10 pin connect, the control output end I/O mouth of master cpu 4 is connected with 24 pin of pronounciation processing chip U1, switch J1 one end is connected to ground, the switch J1 other end is connected with 27 pin of pronounciation processing chip U1, 25 pin of pronounciation processing chip U1 are connected with LED 1 negative pole, and the positive pole of LED 1 is connected with resistance R12 one end, and the resistance R12 other end is connected with power supply VCC, 26 pin of pronounciation processing chip U1 are connected to ground, 16 of pronounciation processing chip U1, 28 pin parallel connections are connected with power supply VCC, 12 of pronounciation processing chip U1, 13 pin parallel connections respectively with electric capacity C8 one end, electric capacity C11 one end is connected with ground, the electric capacity C8 other end is connected with power supply VCC with the electric capacity C11 other end, 14 pin of pronounciation processing chip U1 are connected with electric capacity C6 one end, the electric capacity C16 other end is connected with resistance R10 one end, the resistance R10 other end is connected with voice playing device 8,20 pin of pronounciation processing chip U1 are connected with electric capacity C12 one end, the electric capacity C12 other end is connected with resistance R8 one end, the resistance R8 other end is connected with 21 pin of pronounciation processing chip U1,18 pin of pronounciation processing chip U1 are connected with electric capacity C16 one end, the electric capacity C16 other end is connected with 2 pin of resistance R4 one end and Audio input jack J2 respectively, the resistance R4 other end is connected with electrochemical capacitor C18 positive pole and resistance R11 one end respectively, electrochemical capacitor C18 negative pole is connected with 1 pin of Audio input jack J2, the resistance R11 other end is connected with power supply VCC, 17 pin of pronounciation processing chip U1 are connected with electric capacity C17 one end, the electric capacity C17 other end is connected with 3 pin of resistance R15 one end and Audio input jack J2 respectively, the other end of resistance R5 is connected to ground, 19 pin of pronounciation processing chip U1 are connected with resistance R14 one end and electrochemical capacitor C20 positive pole respectively, the resistance R14 other end and electrochemical capacitor C20 negative pole are connected to ground respectively.
Aforementioned mine digital coding Long-distance Control voice acousto-optic case circuit, wherein voice playing device 8 is made up of speech amplifier module and loudspeaker module.
Aforementioned mine digital coding Long-distance Control voice acousto-optic case circuit, speech amplifier module wherein in voice playing device 8 is by audio frequency integrated power amplifier U2, electric capacity C13, electric capacity C14, electrochemical capacitor C19, electric capacity C15, resistance R13 forms, 1 pin of audio frequency integrated power amplifier U2 is connected with electric capacity C14 one end, the electric capacity C14 other end is connected with 8 pin of audio frequency integrated power amplifier U2, 2 pin of audio frequency integrated power amplifier U2 are connected to ground, voice recording is connected with 3 pin of playing circuit 6 output terminal with audio frequency integrated power amplifier U2, 4 pin of audio frequency integrated power amplifier U2 are connected to ground, electrochemical capacitor C19 one end is connected with 5 pin of audio frequency integrated power amplifier U2 and electric capacity C15 one end respectively, the electrochemical capacitor C19 other end is connected with the loudspeaker module in voice playing device 8, the electric capacity C15 other end is connected with resistance R13 one end, the resistance R13 other end is connected to ground, 6 pin of audio frequency integrated power amplifier U2 are connected with power supply VCC, 7 pin of audio frequency integrated power amplifier U2 are connected with electric capacity C13 one end, the electric capacity C13 other end is connected to ground.
Aforementioned mine digital coding Long-distance Control voice acousto-optic case circuit, wherein address gauge tap 5 is toggle switchs.
Aforementioned mine digital coding Long-distance Control voice acousto-optic case circuit, the loudspeaker module wherein in voice playing device 8 is waterproof intrinsic safety loudspeaker.
Compared with prior art, the beneficial effects of the utility model are:
The utility model adopts the technical scheme of voice recording and playing circuit, obtain the technique effect independently can editing alarm content, the utility model also adopts power supply two coring circuit to superpose and manipulates coding, broadcast communication mode, address gauge tap are combined, each device by address gauge tap come setting device address and by itself address with manipulate subsidiary address code of encoding and relatively judge whether corresponding, thus an acquisition bus can control multiple device, the technique effect of the autonomous response limiting of device energy.Control signal separation circuit of the present utility model coordinates master cpu simultaneously, two-wire system can be avoided to input the problem of polarity connection error, also have the technique effect automatically identifying two-wire system polarity
Accompanying drawing explanation
Fig. 1 is circuit diagram of the present utility model.
Fig. 2 is the circuit diagram of the utility model control signal separation circuit.
Fig. 3 is the circuit diagram of the utility model accessory drive.
Fig. 4 is the circuit diagram of the speech amplifier module in the utility model voice playing device.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1, a kind of mine digital coding Long-distance Control voice acousto-optic case circuit described in the utility model, comprise coding-control output circuit 1, power module 2, control signal separation circuit 3, master cpu 4, address gauge tap 5, voice recording and playing circuit 6, light is reported to the police and is driven and display circuit 7, voice playing device 8, wherein coding-control output circuit 1 is connected with power module 2, coding-control output circuit 1 is connected with control signal separation circuit 3, power module 2 is connected with master cpu 4, power module 2 and light are reported to the police to drive and are connected with display circuit 7, power module 2 is connected with voice playing device 8, control signal separation circuit 3 is connected with master cpu 4, address gauge tap 5 is connected with master cpu 4, master cpu 4 is connected with voice recording and playing circuit 6, voice recording is reported to the police to drive with playing circuit 6 and light and is connected with display circuit 7, voice recording is connected with voice playing device 8 with playing circuit 6.
As shown in Figure 2, control signal separation circuit 3 described in the utility model is by resistance R1, resistance R3, diode D5, resistance R30, half adder CD4070 forms, coding-control output circuit 1 output terminal is connected with resistance R1 one end, another output terminal of coding-control output circuit 1 is connected with the negative pole of diode D5, the positive pole of diode D5 is connected with resistance R30 one end, the resistance R1 other end and the resistance R30 other end are connected in parallel in resistance R3 one end, the resistance R3 other end is connected with 1 pin of half adder CD4070, 2 pin of half adder CD4070 are connected with VCC power supply, 3 pin of half adder CD4070 are connected with 9 pin of half adder CD4070, 8 pin of half adder CD4070 are connected with an I/O of master cpu 4, 10 pin of half adder CD4070 are connected with an I/O mouth of master cpu 4.
As shown in Figure 3, voice recording described in the utility model and playing circuit 6 are by pronounciation processing chip ISD1110, switch J1, Audio input jack J2, resistance R4, resistance R5, resistance R8, resistance R10, resistance R11, resistance R12, resistance R14, electric capacity C6, electric capacity C8, electric capacity C11, electric capacity C12, electric capacity C16, electric capacity C17, electrochemical capacitor C18, electrochemical capacitor C20, LED 1 forms, 8 I/O delivery outlets of master cpu 4 respectively with 1 of pronounciation processing chip ISD1110, 2, 3, 4, 5, 6, 9, 10 pin connect, the control output end I/O mouth of master cpu 4 is connected with 24 pin of pronounciation processing chip ISD1110, switch J1 one end is connected to ground, the switch J1 other end is connected with 27 pin of pronounciation processing chip ISD1110, 25 pin of pronounciation processing chip ISD1110 are connected with LED 1 negative pole, the positive pole of LED 1 is connected with resistance R12 one end, the resistance R12 other end is connected with power supply VCC, 26 pin of pronounciation processing chip ISD1110 are connected to ground, 16 of pronounciation processing chip ISD1110, 28 pin parallel connections are connected with power supply VCC, 12 of pronounciation processing chip ISD1110, 13 pin parallel connections respectively with electric capacity C8 one end, electric capacity C11 one end is connected with ground, the electric capacity C8 other end is connected with power supply VCC with the electric capacity C11 other end, 14 pin of pronounciation processing chip ISD1110 are connected with electric capacity C6 one end, the electric capacity C16 other end is connected with resistance R10 one end, the resistance R10 other end is connected with voice playing device 8, 20 pin of pronounciation processing chip ISD1110 are connected with electric capacity C12 one end, the electric capacity C12 other end is connected with resistance R8 one end, the resistance R8 other end is connected with 21 pin of pronounciation processing chip ISD1110, 18 pin of pronounciation processing chip ISD1110 are connected with electric capacity C16 one end, the electric capacity C16 other end is connected with 2 pin of resistance R4 one end and Audio input jack J2 respectively, the resistance R4 other end is connected with electrochemical capacitor C18 positive pole and resistance R11 one end respectively, electrochemical capacitor C18 negative pole is connected with 1 pin of Audio input jack J2, the resistance R11 other end is connected with power supply VCC, 17 pin of pronounciation processing chip ISD1110 are connected with electric capacity C17 one end, the electric capacity C17 other end is connected with 3 pin of resistance R15 one end and Audio input jack J2 respectively, the other end of resistance R5 is connected to ground, 19 pin of pronounciation processing chip ISD1110 are connected with resistance R14 one end and electrochemical capacitor C20 positive pole respectively, the resistance R14 other end and electrochemical capacitor C20 negative pole are connected to ground respectively.
Voice playing device 8 described in the utility model is made up of speech amplifier module and loudspeaker module.
As shown in Figure 4, speech amplifier module in voice playing device 8 described in the utility model is by audio frequency integrated power amplifier LM386, electric capacity C13, electric capacity C14, electrochemical capacitor C19, electric capacity C15, resistance R13 forms, 1 pin of audio frequency integrated power amplifier LM386 is connected with electric capacity C14 one end, the electric capacity C14 other end is connected with 8 pin of audio frequency integrated power amplifier LM386, 2 pin of audio frequency integrated power amplifier LM386 are connected to ground, voice recording is connected with 3 pin of playing circuit 6 output terminal with audio frequency integrated power amplifier LM386, 4 pin of audio frequency integrated power amplifier LM386 are connected to ground, electrochemical capacitor C19 one end is connected with 5 pin of audio frequency integrated power amplifier LM386 and electric capacity C15 one end respectively, the electrochemical capacitor C19 other end is connected with the loudspeaker module in voice playing device 8, the electric capacity C15 other end is connected with resistance R13 one end, the resistance R13 other end is connected to ground, 6 pin of audio frequency integrated power amplifier LM386 are connected with power supply VCC, 7 pin of audio frequency integrated power amplifier LM386 are connected with electric capacity C13 one end, the electric capacity C13 other end is connected to ground.
Wherein address gauge tap 5 is toggle switchs; Loudspeaker module in voice playing device 8 is waterproof intrinsic safety loudspeaker.
Before erecting device, due to a bus can access multiple device, control signal sends with the forms of broadcasting, each device can receive control signal, the address of each voice acousto-optic case apparatus can be adjusted by address gauge tap according to demand, address can be identical, understands action simultaneously when identical address represents that several device receives control signal.
No matter device is in normal work or when transmitting control signal, and coding-control output circuit 1 all can provide continuously power supply supply.
When needs are reported to the police, coding-control output circuit 1 exports the polarity skip signal of a succession of positive and negative 18V voltage according to steering order, and this skip signal sends with the form of broadcast.
Skip signal enters control signal separation circuit, from control signal separation circuit control signal is therefrom stripped out and becomes 1 or 0 coding formed (positive 18V represents 1, negative 18V represents 0), pass to master cpu again, because the two-wire system mode of connection there will be the possibility of 50% wiring error, false wiring can cause control signal by " phase reversal ", master cpu can monitor the beginning identifier of each field signal that control signal separation circuit sends, when find signal beginning identifier with specify start identifier phase place contrary time, then control control signal separation circuit and keep the phase place of inverted receiver skip signal until stop reversion controlling after receiving correct beginning identifier always, ensure that master cpu receives the correctness of the signal that the transmission of control signal separation circuit comes with this.
Due to a bus can access multiple device, control signal sends with the forms of broadcasting, each device can receive control signal, when master cpu receives control signal, can judge whether identical with the address set by address gauge tap according to the address code in control signal, if the same drive voice recording and playing circuit 6 to carry out audio alert, and drive light warning driving to carry out light indication warning with display circuit 7.
When needs change alarm content, operating personnel can press the recording switch J1 in voice recording and playing circuit 6, and by being plugged on the alarm content needed for the microphone records on Audio input jack J2, after having recorded, unclamping and recording switch J1.
In addition to the implementation, the utility model can also have other embodiments, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of the utility model requirement.
Claims (7)
1. a mine digital coding Long-distance Control voice acousto-optic case circuit, it is characterized in that, comprise coding-control output circuit, power module, control signal separation circuit, master cpu, address gauge tap, voice recording and playing circuit, light is reported to the police and is driven and display circuit, voice playing device, wherein coding-control output circuit is connected with power module, coding-control output circuit is connected with control signal separation circuit, power module is connected with master cpu, power module and light are reported to the police to drive and are connected with display circuit, power module is connected with voice playing device, control signal separation circuit is connected with master cpu, address gauge tap is connected with master cpu, master cpu is connected with voice recording and playing circuit, voice recording is reported to the police to drive with playing circuit and light and is connected with display circuit, voice recording is connected with voice playing device with playing circuit.
2. mine digital coding Long-distance Control voice acousto-optic case circuit as claimed in claim 1, it is characterized in that, described control signal separation circuit is by resistance R1, resistance R3, diode D5, resistance R30, half adder CD4070 forms, coding-control output circuit 1 output terminal is connected with resistance R1 one end, another output terminal of coding-control output circuit is connected with the negative pole of diode D5, the positive pole of diode D5 is connected with resistance R30 one end, the resistance R1 other end and the resistance R30 other end are connected in parallel in resistance R3 one end, the resistance R3 other end is connected with 1 pin of half adder CD4070, 2 pin of half adder CD4070 are connected with VCC power supply, 3 pin of half adder CD4070 are connected with 9 pin of half adder CD4070, 8 pin of half adder CD4070 are connected with an I/O of master cpu, 10 pin of half adder CD4070 are connected with an I/O mouth of master cpu.
3. mine digital coding Long-distance Control voice acousto-optic case circuit as claimed in claim 1, it is characterized in that, described voice recording and playing circuit are by pronounciation processing chip U1, switch J1, Audio input jack J2, resistance R4, resistance R5, resistance R8, resistance R10, resistance R11, resistance R12, resistance R14, electric capacity C6, electric capacity C8, electric capacity C11, electric capacity C12, electric capacity C16, electric capacity C17, electrochemical capacitor C18, electrochemical capacitor C20, LED 1 forms, 8 I/O delivery outlets of master cpu respectively with 1 of pronounciation processing chip U1, 2, 3, 4, 5, 6, 9, 10 pin connect, the control output end I/O mouth of master cpu is connected with 24 pin of pronounciation processing chip U1, switch J1 one end is connected to ground, the switch J1 other end is connected with 27 pin of pronounciation processing chip U1, 25 pin of pronounciation processing chip U1 are connected with LED 1 negative pole, and the positive pole of LED 1 is connected with resistance R12 one end, and the resistance R12 other end is connected with power supply VCC, 26 pin of pronounciation processing chip U1 are connected to ground, 16 of pronounciation processing chip U1, 28 pin parallel connections are connected with power supply VCC, 12 of pronounciation processing chip U1, 13 pin parallel connections respectively with electric capacity C8 one end, electric capacity C11 one end is connected with ground, the electric capacity C8 other end is connected with power supply VCC with the electric capacity C11 other end, 14 pin of pronounciation processing chip U1 are connected with electric capacity C6 one end, the electric capacity C16 other end is connected with resistance R10 one end, the resistance R10 other end is connected with voice playing device, 20 pin of pronounciation processing chip U1 are connected with electric capacity C12 one end, the electric capacity C12 other end is connected with resistance R8 one end, the resistance R8 other end is connected with 21 pin of pronounciation processing chip U1,18 pin of pronounciation processing chip U1 are connected with electric capacity C16 one end, the electric capacity C16 other end is connected with 2 pin of resistance R4 one end and Audio input jack J2 respectively, the resistance R4 other end is connected with electrochemical capacitor C18 positive pole and resistance R11 one end respectively, electrochemical capacitor C18 negative pole is connected with 1 pin of Audio input jack J2, the resistance R11 other end is connected with power supply VCC, 17 pin of pronounciation processing chip U1 are connected with electric capacity C17 one end, the electric capacity C17 other end is connected with 3 pin of resistance R15 one end and Audio input jack J2 respectively, the other end of resistance R5 is connected to ground, 19 pin of pronounciation processing chip U1 are connected with resistance R14 one end and electrochemical capacitor C20 positive pole respectively, the resistance R14 other end and electrochemical capacitor C20 negative pole are connected to ground respectively.
4. as claim 1,2,3 arbitrary as described in mine digital coding Long-distance Control voice acousto-optic case circuit, it is characterized in that, described voice playing device is made up of speech amplifier module and loudspeaker module.
5. mine digital coding Long-distance Control voice acousto-optic case circuit as claimed in claim 4, it is characterized in that, speech amplifier module in described voice playing device is by audio frequency integrated power amplifier U2, electric capacity C13, electric capacity C14, electrochemical capacitor C19, electric capacity C15, resistance R13 forms, 1 pin of audio frequency integrated power amplifier U2 is connected with electric capacity C14 one end, the electric capacity C14 other end is connected with 8 pin of audio frequency integrated power amplifier U2, 2 pin of audio frequency integrated power amplifier U2 are connected to ground, voice recording is connected with 3 pin of playing circuit output terminal with audio frequency integrated power amplifier U2, 4 pin of audio frequency integrated power amplifier U2 are connected to ground, electrochemical capacitor C19 one end is connected with 5 pin of audio frequency integrated power amplifier U2 and electric capacity C15 one end respectively, the electrochemical capacitor C19 other end is connected with the loudspeaker module in voice playing device, the electric capacity C15 other end is connected with resistance R13 one end, the resistance R13 other end is connected to ground, 6 pin of audio frequency integrated power amplifier U2 are connected with power supply VCC, 7 pin of audio frequency integrated power amplifier U2 are connected with electric capacity C13 one end, the electric capacity C13 other end is connected to ground.
6. as claim 1,2,3 arbitrary as described in mine digital coding Long-distance Control voice acousto-optic case circuit, it is characterized in that, described address gauge tap is toggle switch.
7. as claim 1,2,3 arbitrary as described in mine digital coding Long-distance Control voice acousto-optic case circuit, it is characterized in that, the loudspeaker module in described voice playing device is waterproof intrinsic safety loudspeaker.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201420852368.6U CN204347526U (en) | 2014-12-29 | 2014-12-29 | Mine digital coding Long-distance Control voice acousto-optic case circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201420852368.6U CN204347526U (en) | 2014-12-29 | 2014-12-29 | Mine digital coding Long-distance Control voice acousto-optic case circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
CN204347526U true CN204347526U (en) | 2015-05-20 |
Family
ID=53230784
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201420852368.6U Active CN204347526U (en) | 2014-12-29 | 2014-12-29 | Mine digital coding Long-distance Control voice acousto-optic case circuit |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN204347526U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104503334A (en) * | 2014-12-29 | 2015-04-08 | 镇江中煤电子有限公司 | Mining digital coding remotely controlled voice acoustic optical box circuit |
-
2014
- 2014-12-29 CN CN201420852368.6U patent/CN204347526U/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104503334A (en) * | 2014-12-29 | 2015-04-08 | 镇江中煤电子有限公司 | Mining digital coding remotely controlled voice acoustic optical box circuit |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN204347526U (en) | Mine digital coding Long-distance Control voice acousto-optic case circuit | |
CN105427554A (en) | Intelligent early warning broadcast control system with alarm indication function | |
CN204155385U (en) | A kind of code-shaped fire acousto-optic alarm | |
CN202083784U (en) | UPS on-line monitoring apparatus | |
CN204375125U (en) | Operation irregularity alarm device | |
CN104503334A (en) | Mining digital coding remotely controlled voice acoustic optical box circuit | |
CN204515160U (en) | Offshore shooting instrument towing cable DC constant current power supply is powered and is gone up electric system step by step | |
CN204349583U (en) | Mine digital coding Long-distance Control breaker device | |
CN107395477A (en) | A kind of single-chip microcomputer input/output interface control device based on communication protocol | |
CN208924278U (en) | Conference host | |
CN209231764U (en) | A kind of laser wireless control apparatus | |
CN105656581A (en) | Intelligent early-warning broadcasting control system suitable for encrypted information | |
CN205921705U (en) | Decoder | |
CN201813160U (en) | Direct-current power distribution box | |
CN205063997U (en) | Mine operation panel alarm | |
CN202534147U (en) | Electric power remote control device | |
CN205122954U (en) | Binding post module | |
CN204029076U (en) | A kind of printing press voice prompt alarm system | |
CN202260237U (en) | High-voltage cabinet with data interface | |
CN205003220U (en) | Lightning current HF reject monitoring devices | |
CN205016003U (en) | Digital coding remote control doorbell | |
CN208189003U (en) | A kind of fire-fighting display device of floor | |
CN104468241B (en) | Base band communication bus partial short-circuit failure automatic cut-off device | |
CN203733111U (en) | USB transmission interrupt automatic recovery device | |
CN204464948U (en) | A kind of on-vehicle safety circuit controller |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant |