CN219127355U - Electric tracing combined type eyewash device - Google Patents
Electric tracing combined type eyewash device Download PDFInfo
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- CN219127355U CN219127355U CN202220496348.4U CN202220496348U CN219127355U CN 219127355 U CN219127355 U CN 219127355U CN 202220496348 U CN202220496348 U CN 202220496348U CN 219127355 U CN219127355 U CN 219127355U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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Abstract
The utility model discloses an electric tracing composite eyewash device, which comprises an electric tracing band, a temperature acquisition unit and a temperature controller, wherein the temperature acquisition unit comprises a temperature probe for acquiring the temperature of a water source in the eyewash device, a signal output end of the temperature probe is sequentially connected with a signal noise reduction circuit, an amplification feedback regulation circuit and a amplitude stabilizing filter circuit, an output end of the amplitude stabilizing filter circuit is connected with the temperature controller through an A/D converter, and an output end of the temperature controller is connected with a control end of the electric tracing band; according to the temperature acquisition unit, the detection signal of the temperature probe is conditioned, so that the influence of external interference signals on the water source temperature acquisition process is effectively avoided, the accuracy and stability of the temperature detection signal are ensured, the temperature controller can timely and accurately adjust the working state of an electric tracing band so as to switch to a proper water temperature, and the temperature control effect of the eye washer is improved.
Description
Technical Field
The utility model relates to the technical field of eyewashes, in particular to an electric tracing composite eyewash.
Background
The eye washer is an effective safety protection article which is used for quickly minimizing harm when toxic and harmful substances (such as chemical liquid and the like) are splashed on the body, face and eyes of a worker or fire occurs to cause the worker clothes to catch fire and the like in emergency situations. At present, an electric tracing composite eye washer is mostly adopted, for example, the application number is 201820095126.5, and the utility model patent with the name of a full-automatic electric tracing composite eye washer is provided, the technical scheme adopts an electric tracing mode to heat, the heat is uniform, the working stability of equipment in a low-temperature environment is ensured, and the use is more convenient; however, the technical scheme lacks automatic temperature control on the electric tracing band, so that the stability of the water outlet temperature is difficult to ensure in the actual use process.
The utility model patent with the application number of 201711127318.6 and the name of electric tracing vertical eyewash adopts an automatic temperature control electric tracing band to heat and preserve heat of an internal water source of the eyewash, so that the use of the eyewash is prevented from being influenced by freezing of the internal water source of the eyewash, and a temperature controller is arranged to control the temperature of the internal water source of the eyewash; although this technical scheme can realize the automatically regulated to water source temperature, in the acquisition process to water source temperature, temperature probe's detected signal receives the rivers to assault easily and produces fluctuation noise, and signal output is unstable, and the electromagnetic interference that the electric tracing band-pass electricity produced also can influence temperature detection signal transmission precision, leads to there is the deviation in water source temperature detected value and actual value, causes certain bad experience for the in-service use of eyewash.
The present utility model provides a new solution to this problem.
Disclosure of Invention
Aiming at the situation, the utility model aims to overcome the defects of the prior art and provide an electric tracing composite eye washer.
The technical scheme for solving the problems is as follows: the utility model provides an electric tracing combined type eyewash ware, includes electric tracing area, temperature acquisition unit and temperature controller, temperature acquisition unit is including being used for gathering the inside water source temperature's of eyewash ware temperature probe, temperature probe's signal output part connects gradually signal noise reduction circuit, amplification feedback regulating circuit and steady amplitude filter circuit, steady amplitude filter circuit's output passes through the AD converter and connects the temperature controller, the output of temperature controller is connected the control end of electric tracing area.
Preferably, the signal noise reduction circuit comprises capacitors C1 and C2 and a resistor R1, one ends of the capacitors C1 and the resistor R1 are connected with the signal output end of the temperature probe, the other end of the resistor R1 is connected with one end of the capacitor C2 and the input end of the amplifying feedback regulating circuit, and the other ends of the capacitors C1 and C2 are grounded.
Preferably, the amplifying feedback adjusting circuit includes operational amplifiers AR1 and AR2, the non-inverting input terminal of the operational amplifier AR1 is connected to one end of a capacitor C2, the inverting input terminal of the operational amplifier AR1 is connected to one ends of resistors R6 and R7, and is connected to the output terminal of the operational amplifier AR1 and one end of a resistor R3 through a resistor R2 and a capacitor C3 connected in parallel, the other end of the resistor R3 is connected to the non-inverting input terminal of the operational amplifier AR2, and is grounded through a resistor R4 and a capacitor C4 connected in parallel, the inverting input terminal of the operational amplifier AR2 is grounded through a resistor R5, and is connected to the output terminal of the operational amplifier AR2 and the other end of the resistor R6 through a capacitor C5, and the other end of the resistor R7 is grounded.
Preferably, the amplitude stabilizing filter circuit comprises a MOS transistor Q1, a drain electrode of the MOS transistor Q1 is connected with an output end of the operational amplifier AR1 and one end of a resistor R9, a source electrode of the MOS transistor Q1 is connected with one end of a resistor R8 and a cathode of a zener diode DZ1, the other end of the resistor R8 and an anode of the zener diode DZ1 are connected in parallel, the other end of the resistor R9 is connected with one end of a capacitor C6 and the a/D converter through a resistor R10 and an inductor L1 which are connected in parallel, and the other end of the capacitor C6 is grounded.
Preferably, the temperature probe is a water pipe type temperature sensor with the model TS-9100.
Preferably, the temperature controller is a singlechip.
Through the technical scheme, the utility model has the beneficial effects that: according to the temperature acquisition unit, the detection signal of the temperature probe is conditioned, so that the influence of external interference signals on the water source temperature acquisition process is effectively avoided, the accuracy and stability of the temperature detection signal are ensured, the temperature controller can timely and accurately adjust the working state of an electric tracing band so as to switch to a proper water temperature, and the temperature control effect of the eye washer is improved.
Drawings
Fig. 1 is a schematic circuit diagram of a temperature acquisition unit according to the present utility model.
Detailed Description
The foregoing and other features, aspects and advantages of the present utility model will become more apparent from the following detailed description of the embodiments, which proceeds with reference to the accompanying fig. 1. The following embodiments are described in detail with reference to the drawings.
Exemplary embodiments of the present utility model will be described below with reference to the accompanying drawings.
The utility model provides an electric tracing combined type eyewasher, includes electric tracing area, temperature acquisition unit and temperature controller, temperature acquisition unit is including being used for gathering the inside water source temperature's of eyewasher temperature probe, temperature probe's signal output part connects gradually signal noise reduction circuit, amplification feedback regulation circuit and steady amplitude filter circuit, steady amplitude filter circuit's output passes through the AD converter and connects the temperature controller, the output of temperature controller is connected the control end of electric tracing area.
As shown in fig. 1, the signal noise reduction circuit includes capacitors C1 and C2 and a resistor R1, one ends of the capacitors C1 and the resistor R1 are connected to the signal output end of the temperature probe, the other end of the resistor R1 is connected to one end of the capacitor C2 and the input end of the amplifying feedback adjustment circuit, and the other ends of the capacitors C1 and C2 are grounded.
The amplifying feedback regulating circuit comprises an operational amplifier AR1 and an operational amplifier AR2, wherein the non-inverting input end of the operational amplifier AR1 is connected with one end of a capacitor C2, the inverting input end of the operational amplifier AR1 is connected with one ends of a resistor R6 and a resistor R7, the output end of the operational amplifier AR1 and one end of a resistor R3 are connected through a resistor R2 and a capacitor C3 which are connected in parallel, the other end of the resistor R3 is connected with the non-inverting input end of the operational amplifier AR2 and grounded through a resistor R4 and a capacitor C4 which are connected in parallel, the inverting input end of the operational amplifier AR2 is grounded through a resistor R5, the output end of the operational amplifier AR2 and the other end of the resistor R6 are connected through a capacitor C5, and the other end of the resistor R7 is grounded.
The amplitude stabilizing filter circuit comprises a MOS tube Q1, wherein the drain electrode of the MOS tube Q1 is connected with the output end of an operational amplifier AR1 and one end of a resistor R9, the other end of a grid electrode drain electrode resistor R3 of the MOS tube Q1 is connected with one end of a resistor R8 and the cathode of a voltage stabilizing diode DZ1, the other end of the resistor R8 and the anode of the voltage stabilizing diode DZ1 are connected with the ground in parallel, the other end of the resistor R9 is connected with one end of a capacitor C6 and the A/D converter through a resistor R10 and an inductor L1 which are connected in parallel, and the other end of the capacitor C6 is grounded.
The specific working principle of the utility model is as follows: taking a water pipe type temperature sensor with the model of TS-9100 as an example, the temperature probe collects the temperature of a water source inside the eyewash device through the TS-9100 water pipe type temperature sensor, and converts the collected signal into an electric signal in direct proportion to the temperature for output; in order to ensure the accuracy of the water source temperature acquisition process, a signal noise reduction circuit is adopted to process a temperature detection signal, and the signal noise reduction circuit utilizes a pi-type RC filter principle to carry out low-pass noise reduction on the detection signal so as to effectively filter high-frequency electromagnetic interference generated by electric tracing band-pass electrification; the detection signal is sent to an amplification feedback regulating circuit for signal enhancement processing after noise reduction, wherein an operational amplifier AR1 is used as a main amplifier for carrying out in-phase amplification on the detection signal, and a resistor R2 and a capacitor C3 carry out phase regulation on the detection signal by utilizing a resistance-capacitance feedback compensation principle in the operational amplification process so as to ensure the stability of the output waveform of the detection signal; meanwhile, in order to avoid generating operational amplifier offset, the output signal of the operational amplifier AR1 is sampled by utilizing resistor shunt, the sampled signal is sent into the operational amplifier AR2 for amplification treatment after being stabilized by the capacitor C4, the amplified signal of the operational amplifier AR2 can be continuously and stably fed back to the inverting input end of the operational amplifier AR1 by utilizing the signal compensation function of the capacitor C5, and therefore the operational amplifier offset voltage of the non-inverting input end of the operational amplifier AR1 can be effectively counteracted according to the subtracter principle, the zero drift influence is eliminated, and the accuracy of the amplification treatment of the temperature detection signal is effectively improved.
Further, the MOS tube Q1 in the amplitude stabilizing filter circuit is used as a regulating tube to regulate the amplitude stabilizing of the output signal of the amplifying feedback regulating circuit, and the amplitude stabilizing characteristic of the voltage stabilizing diode DZ1 is utilized to ensure that the MOS tube Q1 keeps good working stability, so that the amplified detection signal has good amplitude stability; then the RLC wave trap is formed by the resistor R10, the inductor L1 and the capacitor C6 to trap and reduce noise of the detection signal, and specific frequency noise generated by water flow impact can be effectively eliminated by utilizing the wave trap principle, so that the output precision of the detection signal is effectively improved. The A/D converter converts analog quantity signals output by the temperature acquisition unit into digital quantities and sends the digital quantities into the temperature controller, and when the temperature controller is specifically set, the temperature controller selects a singlechip as a controller to control on-off of an electric tracing band, so that automatic heat tracing and heat preservation of an internal water source of the eyewash are realized.
In summary, the temperature acquisition unit in the utility model conditions the detection signal of the temperature probe, so that the influence of external interference signals on the water source temperature acquisition process is effectively avoided, the accuracy and stability of the temperature detection signal are ensured, the temperature controller can timely and accurately adjust the working state of the electric tracing band so as to switch to a proper water temperature, and the temperature control effect of the eye washer is improved.
While the utility model has been described in connection with certain embodiments, it is not intended that the utility model be limited thereto; for those skilled in the art to which the present utility model pertains and the related art, on the premise of based on the technical scheme of the present utility model, the expansion, the operation method and the data replacement should all fall within the protection scope of the present utility model.
Claims (6)
1. The utility model provides an electric tracing combined type eyewash ware, includes electric tracing area, temperature acquisition unit and temperature controller, its characterized in that: the temperature acquisition unit comprises a temperature probe for acquiring the temperature of a water source inside the eye washer, a signal output end of the temperature probe is sequentially connected with a signal noise reduction circuit, an amplification feedback regulation circuit and a amplitude stabilizing filter circuit, an output end of the amplitude stabilizing filter circuit is connected with the temperature controller through an A/D converter, and an output end of the temperature controller is connected with a control end of the electric tracing band.
2. The electric tracing composite eye washer of claim 1, wherein: the signal noise reduction circuit comprises capacitors C1 and C2 and a resistor R1, one end of the capacitor C1 and one end of the resistor R1 are connected with the signal output end of the temperature probe, the other end of the resistor R1 is connected with one end of the capacitor C2 and the input end of the amplification feedback regulation circuit, and the other ends of the capacitors C1 and C2 are grounded.
3. The electric tracing composite eye washer of claim 2, wherein: the amplifying feedback regulating circuit comprises an operational amplifier AR1 and an operational amplifier AR2, wherein the non-inverting input end of the operational amplifier AR1 is connected with one end of a capacitor C2, the inverting input end of the operational amplifier AR1 is connected with one ends of a resistor R6 and a resistor R7, the inverting input end of the operational amplifier AR1 is connected with one end of a resistor R3 through a resistor R2 and a capacitor C3 which are connected in parallel, the other end of the resistor R3 is connected with the non-inverting input end of the operational amplifier AR2 and is grounded through a resistor R4 and a capacitor C4 which are connected in parallel, the inverting input end of the operational amplifier AR2 is grounded through a resistor R5, the output end of the operational amplifier AR2 is connected with the other end of the resistor R6 through a capacitor C5, and the other end of the resistor R7 is grounded.
4. The electric tracing composite eye washer of claim 3, wherein: the amplitude stabilizing filter circuit comprises a MOS tube Q1, wherein the drain electrode of the MOS tube Q1 is connected with the output end of an operational amplifier AR1 and one end of a resistor R9, the other end of a grid electrode drain electrode resistor R3 of the MOS tube Q1 is connected with one end of a resistor R8 and the cathode of a voltage stabilizing diode DZ1, the other end of the resistor R8 is connected with the anode of the voltage stabilizing diode DZ1 in parallel, the other end of the resistor R9 is connected with one end of a capacitor C6 and the A/D converter through a resistor R10 and an inductor L1 which are connected in parallel, and the other end of the capacitor C6 is grounded.
5. The electric tracing composite eye washer of any one of claims 1-4, wherein: the temperature probe is a water pipe type temperature sensor with the model of TS-9100.
6. The electric tracing composite eye washer of claim 5, wherein: the temperature controller is a singlechip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220496348.4U CN219127355U (en) | 2022-03-07 | 2022-03-07 | Electric tracing combined type eyewash device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220496348.4U CN219127355U (en) | 2022-03-07 | 2022-03-07 | Electric tracing combined type eyewash device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219127355U true CN219127355U (en) | 2023-06-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220496348.4U Active CN219127355U (en) | 2022-03-07 | 2022-03-07 | Electric tracing combined type eyewash device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219127355U (en) |
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2022
- 2022-03-07 CN CN202220496348.4U patent/CN219127355U/en active Active
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