CN206560509U - A kind of sick bed with steam table - Google Patents
A kind of sick bed with steam table Download PDFInfo
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- CN206560509U CN206560509U CN201621332797.6U CN201621332797U CN206560509U CN 206560509 U CN206560509 U CN 206560509U CN 201621332797 U CN201621332797 U CN 201621332797U CN 206560509 U CN206560509 U CN 206560509U
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Abstract
The utility model discloses a kind of sick bed with steam table, including bed body, dining table is provided with the bed body, insulation groove is provided with the dining table, the insulation groove includes the integral disk body of Pan Kou and the dining table upper surface, the thermal insulation layer being arranged on the disk body inwall, the electric heating piece being arranged between the disk body and the thermal insulation layer and temperature control system, and the temperature control system includes：Temperature detecting unit, for detecting the temperature of thermal insulation layer, and exports temperature measurement signal；Processing unit, is coupled to the output end of temperature detecting unit, and the break-make between the electric heating piece and power supply is controlled for receiving the temperature measurement signal, and according to the temperature measurement signal；Patient's food during dining can be made to keep enough temperatures, and with automatic temperature-controlled and easy to operate advantage.
Description
Technical field
The utility model is related to technical field of medical instruments, more specifically, it relates to a kind of disease with steam table
Bed.
Background technology
Sick bed is the bed that patient uses in recuperation, mainly for the daily life or life to patient provide more convenience.
In the prior art, it is provided with dining table to facilitate patient to have dinner mostly on sick bed.Patient is when having meal, and food can be gradually cold
But, the food of supercooling can directly affect the dining experience and physical rehabilitation of patient.
Disclose a kind of medical hospital bed in Publication No. CN203915273U Chinese patent, including sick bed body,
Sick bed body bottom portion is provided with support feet, and on one's sick bed provided with head of a bed guardrail and tailstock guardrail, described sick bed both sides are equipped with
Side rail, described sick bed is provided with mobilizable convertible dining table, and the convertible dining table includes a platen and supporting table
The support column of plate, support column is arranged on the side of sick bed body., can by slide rail and sliding block after employing said structure
It is convenient that dining table is pushed away remote and furthered, facilitate patient to have dinner and leave the bed.But during patient has meal, food is easily gradually
Turn cold, when food is subcooled, these supercooling foods of having meal can influence the dining experience and physical rehabilitation of patient.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of disease with steam table
Bed, can be heated and be incubated to food, patient's food during dining is kept enough temperatures.
To achieve the above object, the utility model provides following technical scheme：
It is provided with dining table, the dining table and is provided with a kind of sick bed with steam table, including bed body, the bed body
Groove is incubated, the insulation groove includes Pan Kou and the integral disk body in the dining table upper surface, is arranged on the disk body inwall
On thermal insulation layer, the electric heating piece that is arranged between the disk body and the thermal insulation layer and temperature control system, institute
Stating temperature control system includes：Temperature detecting unit, for detecting the temperature of thermal insulation layer, and exports temperature measurement signal；Processing
Unit, is coupled to the output end of temperature detecting unit, and institute is controlled for receiving the temperature measurement signal, and according to the temperature measurement signal
State the break-make between electric heating piece and power supply.
By using above-mentioned technical proposal, food or the tableware for filling food are placed in insulation groove, and is passed through
Temperature control system control electric heating piece is heated and is incubated to food.So that patient's food during dining is maintained
Enough temperatures, improve the dining experience of patient and more beneficial to patients ' recovery.
Further, the temperature detecting unit includes：The thermistor RT of negative temperature coefficient, it is arranged at insulating heat-conductive
In layer, its one end is coupled to the first direct current Vout_1, and the other end is grounded after being connected with a first resistor R1, from thermistor RT
The temperature measurement signal is produced between first resistor R1.
Further, the processing unit includes:Lower limit comparison circuit, is coupled to the output of the temperature detecting unit
End, the temperature measurement signal received is compared with a lower limit reference voltage and exports a lower limit comparison signal；Upper limit comparison circuit, coupling
The output end of the temperature detecting unit is connected to, the temperature measurement signal received is compared with a upper limit reference voltage in output one
Limit comparison signal；State switching circuit, is coupled to lower limit comparison circuit and upper limit comparison circuit, to according to the lower limit received
Comparison signal and upper limit comparison signal export a corresponding control OFF signal；Circuit is opened and closed, the state switching circuit is coupled to, used
To control the break-make between the electric heating piece and power supply according to the control OFF signal.
Further, the lower limit comparison circuit includes：Lower limit reference voltage generation circuit, with a second resistance R2,
Its one end is coupled to the first direct current Vout_1, and the other end is grounded after being connected with a 3rd resistor R3, from second resistance R2 and the
The lower limit reference voltage is produced between three resistance R3；First comparator A, with an in-phase input end, an inverting input and
One output end, the in-phase input end is coupled between second resistance R2 and 3rd resistor R3, and inverting input is coupled to temperature-sensitive
Between resistance RT and first resistor R1, output end exports the lower limit comparison signal.
Further, the upper limit comparison circuit includes：Upper limit reference voltage generation circuit, with one the 4th resistance R4,
Its one end is coupled to the first direct current Vout_1, and the other end is grounded after being connected with one the 5th resistance R5, from the 4th resistance R4 and the
The upper limit reference voltage is produced between five resistance R5；Second comparator B, with an in-phase input end, an inverting input and
One output end, the inverting input is coupled between the 4th resistance R4 and the 5th resistance R5, and in-phase input end is coupled to temperature-sensitive
Between resistance RT and first resistor R1, output end exports the upper limit comparison signal.
Further, the state switching circuit includes：OR gate OR_1, with two inputs and an output end, its
First input end is coupled to first comparator A output end, and the second input is coupled to the second comparator B output end；T is triggered
Device T_1, with control end T, input end of clock CK and output end Q, its control end T is coupled to the first direct current Vout_1, at that time
Clock input CK is coupled to the output end of the OR gate OR_1, and exports the control OFF signal in its output end Q.
Further, the keying circuit includes：NPN triode Q1, its grounded emitter, base stage passes through one the 6th resistance
R6 be coupled to the output end Q of the T triggers T_1 and by one the 7th resistance R7 and emitter stage altogether；Normally opened relay KM1,
The first end of its coil is coupled to the second direct current Vout_2, and the second end of its coil is coupled to the colelctor electrode of NPN triode Q1,
Its normally opened contact switch S1 is serially connected between the electric heating piece and power supply；First diode D1, its negative pole is coupled to normally opened relay
The first end of device KM1 coil, positive pole is coupled to the second end of normally opened relay KM1 coil.
Further, the temperature control system also includes temperature-prompting unit, and the temperature-prompting unit includes, and first
LED 1, its positive pole is coupled to first comparator A output end, negative pole ground connection；NOT gate NOT_1, it is defeated with one
Enter end and an output end, its input is coupled to first comparator A output end；Second LED 2, its positive pole
It is coupled to NOT gate NOT_1 output end, negative pole ground connection.
By using above-mentioned technical proposal, when temperature control system is started working, originally thermal insulation layer is less than lower limit
The corresponding lower limit temperature of reference voltage, temperature measurement signal is less than lower limit reference voltage, first comparator A output high level, the second ratio
Low level is exported compared with device B, state switching circuit exports the control OFF signal of high level, opens and closes the company of circuit turn-on electric heating piece and power supply
Connect, electric heating piece is begun to warm up thermal insulation layer, meanwhile, the positive pole reception first comparator A of the first LED 1 is defeated
The high level that goes out and turn on, for reminding user that thermal insulation layer not yet reaches lower limit temperature；When thermal insulation layer temperature is high
When lower limit temperature and ceiling temperature corresponding less than upper limit reference voltage, temperature measurement signal is higher than lower limit reference voltage and less than upper
Reference voltage is limited, first comparator A and the second comparator B export low level, and state switching circuit keeps output high level
OFF signal is controlled, electric heating piece continues to heat thermal insulation layer, meanwhile, the second LED 2 is turned on, the first light emitting diode
LED1 ends, for reminding user's thermal insulation layer temperature to be higher than lower limit temperature, can start to have meal, the first light emitting diode
LED1 positive pole receives the low level of first comparator A outputs and ended；When thermal insulation layer temperature is joined just above ceiling temperature
When examining the corresponding upper limit working temperature of voltage, the temperature measurement signal of temperature detecting unit output end output higher than lower limit reference voltage and
Upper limit reference voltage, first comparator A still exports low level, and the second LED 2 is remain on, the first light-emitting diodes
Pipe LED1 keeps extinguishing, the second comparator B output high level, and state switching circuit upset is to export low level control OFF signal,
The connection that circuit disconnects electric heating piece and power supply is opened and closed, electric heating piece is stopped heating thermal insulation layer, it is achieved thereby that being led to insulation
The purpose of thermosphere rapidly pre-warming.
When thermal insulation layer is just cooled to lower working temperature, the temperature measurement signal of temperature detecting unit output end output is low
In lower limit reference voltage and upper limit reference voltage, first comparator A output high level, the second LED 2 ends, the
One LED 1 is turned on, and the second comparator B still exports low level, and letter is closed in the control of state switching circuit output high level
Number, the connection of circuit turn-on electric heating piece and power supply is opened and closed, electric heating piece is begun to warm up；When thermal insulation layer temperature is just above lower limit
During operating temperature, the temperature measurement signal of temperature detecting unit output end output is higher than lower limit reference voltage and less than upper limit reference electricity
Pressure, first comparator A and the second comparator B export low level, and the second LED 2 ends, the first light emitting diode
LED1 is turned on, and state switching circuit keeps the control OFF signal of output high level, and electric heating piece continues to heat；When thermal insulation layer temperature
During upper limit working temperature corresponding just above ceiling temperature reference voltage, the temperature measurement signal of temperature detecting unit output end output is high
In lower limit reference voltage and upper limit reference voltage, first comparator A still exports low level, the holding point of the second LED 2
Bright, the first LED 1 keeps extinguishing, and the second comparator B output high level, state switching circuit upset is low to export
The control OFF signal of level, opens and closes the connection that circuit disconnects electric heating piece and power supply, electric heating piece is stopped heating, it is achieved thereby that to exhausted
The purpose of edge heat-conducting layer insulation.
Further, second resistance R2 and the 4th resistance R4 is variable resistance, and second resistance R2 the first resistance is adjusted
The the second resistance adjusting knob for saving knob and the 4th resistance R4 is arranged on the dining table.
By using above-mentioned technical proposal, second resistance R2 can be changed by the resistance adjusting knob in lazy Susan
With the 4th resistance R4 resistance, and then change lower limit reference voltage and upper limit reference voltage, so as to adjust thermal insulation layer
Wanted keeping temperature scope.
Compared with prior art, the utility model has the advantages that：The food for being placed on insulation groove can be heated
And be incubated, patient's food during dining is kept enough temperatures, improve the dining experience of patient and be conducive to disease
Human body rehabilitation；And it is adjustable thermal insulation layer institute by rotating the first resistance adjusting knob and the second resistance adjusting knob
The temperature range to be kept, it is easy to operate.
Brief description of the drawings
Fig. 1 is the structural representation of the present embodiment；
Fig. 2 is the top view of the present embodiment；
Fig. 3 is the sectional view of the line A-A along along Fig. 2；
Fig. 4 is the enlarged drawing in E portions in Fig. 3；
Fig. 5 is the sectional view of the line B-B along along Fig. 2；
Fig. 6 is the enlarged drawing in F portions in Fig. 5；
Fig. 7 is the circuit diagram of the present embodiment；
Fig. 8 is the circuit diagram of power subsystem.
Reference：1st, bed body；2nd, support；3rd, dining table；4th, it is incubated groove；5th, disk body；6th, thermal insulation layer；7th, electric heating
Piece；8th, temperature control system；9th, temperature detecting unit；10th, processing unit；11st, temperature-prompting unit；12nd, power subsystem；13、
Lower limit comparison circuit；14th, upper limit comparison circuit；15th, state switching circuit；16th, circuit is opened and closed；17th, lower limit reference voltage is generated
Circuit；18th, upper limit reference voltage generation circuit；19th, the first resistance adjusting knob；20th, the second resistance adjusting knob.
Embodiment
With reference to the accompanying drawings and examples, the utility model is described in detail.
Referring to Figures 1 and 2, a kind of sick bed with steam table 3, including bed body 1, the both sides of the bed body 1 are symmetrically each
It is provided with a support 2, two supports 2 to slidably connect and insulation groove 4, reference picture 2 is installed on a dining table 3, dining table 3
And Fig. 4, the insulation groove 4 is including Pan Kou with the integral disk body 5 in the upper surface of dining table 3, installed in the inwall of disk body 5
On thermal insulation layer 6, the electric heating piece 7 between the disk body 5 and the thermal insulation layer 6 and temperature control system
8, thermal insulation layer 6 can be made of heat conductive insulating silica gel, reference picture 7 and Fig. 8, and the temperature control system 8 includes：Temperature detection
Unit 9, for detecting the temperature of thermal insulation layer 6, and exports temperature measurement signal；Processing unit 10, is coupled to temperature detecting unit 9
Output end, for receiving the temperature measurement signal, and controlled according to the temperature measurement signal logical between the electric heating piece 7 and power supply
It is disconnected；And temperature-prompting unit 11 and power subsystem 12.
Food or the tableware for filling food are placed in insulation groove 4, and electric heating is controlled by temperature control system 8
Piece 7 is heated and is incubated to food.So that patient's food during dining maintains enough temperatures, disease is improved
The dining experience of people and more beneficial to patients ' recovery.
The circuit diagram of power subsystem 12 is as shown in figure 8, its input is coupled to 220V AC powers, through over commutation decompression filter
The first direct current Vout_1 is exported after ripple, first direct current Vout_1 is 5V；Second direct current Vout_2, second direct current
Vout_2 is 12V, so that temperature control system 8 is used, in addition, directly powered from the input of power subsystem 12 to electric heating piece 7,
I.e. the power supply of electric heating piece 7 is 220V AC powers.
Reference picture 6 and Fig. 7, the temperature detecting unit 9 include：The thermistor RT of negative temperature coefficient, it is installed on absolutely
In edge heat-conducting layer 6, its one end is coupled to the first direct current Vout_1, and the other end is grounded after being connected with a first resistor R1, self-heating
The temperature measurement signal is produced between quick resistance RT and first resistor R1.
Reference picture 7, the processing unit 10 includes:Lower limit comparison circuit 13, is coupled to the defeated of the temperature detecting unit 9
Go out end, the temperature measurement signal received is compared with a lower limit reference voltage and exports a lower limit comparison signal；Upper limit comparison circuit
14, be coupled to the output end of the temperature detecting unit 9, by the temperature measurement signal received compared with a upper limit reference voltage it is more defeated
Go out a upper limit comparison signal；State switching circuit 15, is coupled to lower limit comparison circuit 13 and upper limit comparison circuit 14, to basis
The lower limit comparison signal and upper limit comparison signal received exports a corresponding control OFF signal；Circuit 16 is opened and closed, is coupled to described
State switching circuit 15, to control the break-make between the electric heating piece 7 and power supply according to the control OFF signal.
The lower limit comparison circuit 13 includes：Lower limit reference voltage generation circuit 17, with a second resistance R2, its one end
The first direct current Vout_1 is coupled to, the other end is grounded after being connected with a 3rd resistor R3, from second resistance R2 and 3rd resistor
The lower limit reference voltage is produced between R3；First comparator A, with an in-phase input end, an inverting input and an output
End, the in-phase input end is coupled between second resistance R2 and 3rd resistor R3, and inverting input is coupled to thermistor RT
Between first resistor R1, output end exports the lower limit comparison signal.
The upper limit comparison circuit 14 includes：Upper limit reference voltage generation circuit 18, with one the 4th resistance R4, its one end
The first direct current Vout_1 is coupled to, the other end is grounded after being connected with one the 5th resistance R5, from the 4th resistance R4 and the 5th resistance
The upper limit reference voltage is produced between R5；Second comparator B, with an in-phase input end, an inverting input and an output
End, the inverting input is coupled between the 4th resistance R4 and the 5th resistance R5, and in-phase input end is coupled to thermistor RT
Between first resistor R1, output end exports the upper limit comparison signal.
In foregoing circuit, first comparator A and the second comparator B are active voltage comparator, power access end coupling
In the first direct current Vout_1, earth terminal ground connection.
The state switching circuit 15 includes：OR gate OR_1, with two inputs and an output end, its first input
End is coupled to first comparator A output end, and the second input is coupled to the second comparator B output end；T trigger T_1, tool
There are control end T, input end of clock CK and output end Q, its control end T is coupled to the first direct current Vout_1, its input end of clock
CK is coupled to the output end of the OR gate OR_1, and exports the control OFF signal in its output end Q.
The keying circuit 16 includes：NPN triode Q1, its grounded emitter, base stage is coupled by one the 6th resistance R6
In the T triggers T_1 output end Q and by one the 7th resistance R7 and emitter stage altogether；Normally opened relay KM1, its coil
First end be coupled to the second direct current Vout_2, the second end of its coil is coupled to the colelctor electrode of NPN triode Q1, and its is normally opened
Contact switch S1 is serially connected between the electric heating piece 7 and power supply；First diode D1, its negative pole is coupled to normally opened relay KM1
Coil first end, positive pole is coupled to the second end of normally opened relay KM1 coil.
Reference picture 7 and Fig. 2, the temperature-prompting unit 11 include, the first LED 1, and its positive pole is coupled to
One comparator A output end, negative pole ground connection；NOT gate NOT_1, with an input and an output end, the coupling of its input
In first comparator A output end；Second LED 2, its positive pole is coupled to NOT gate NOT_1 output end, and negative pole connects
Ground.NOT gate NOT_1 can use 74LS04 chips.First LED 1 and the second LED 2 are arranged on described
On the upper surface of dining table 3.
Reference picture 7 and Fig. 2, second resistance R2 and the 4th resistance R4 are variable resistance, second resistance R2 the first resistance
It is worth the resistance R4 of adjusting knob 19 and the 4th the second resistance adjusting knob 20 to be arranged on the dining table 3.Rotary dining can be passed through
Resistance adjusting knob on table 3 changes second resistance R2 and the 4th resistance R4 resistance, so change lower limit reference voltage and
Upper limit reference voltage, so as to adjust the temperature range to be kept of thermal insulation layer 6.
The present embodiment has the practical work process of the sick bed of steam table 3 as follows：
When temperature control system 8 is started working, originally thermal insulation layer 6 is less than the corresponding lower limit temperature of lower limit reference voltage
Degree, temperature measurement signal is less than lower limit reference voltage, first comparator A output high level, the second comparator B output low levels, OR gate
OR_1 exports low level, because T trigger T_1 output end Q initial states export low level, therefore T trigger T_1 output ends Q exists
Now upset is output high level, after amplifying through NPN triode Q1, closes normally opened relay KM1 normally opened contact switch S1,
Electric heating piece 7 begins to warm up thermal insulation layer 6, meanwhile, the positive pole of the first LED 1 receives first comparator A outputs
High level and turn on, for reminding user's thermal insulation layer 6 not yet to reach lower limit temperature；When the temperature of thermal insulation layer 6 is higher than
When lower limit temperature and ceiling temperature corresponding less than upper limit reference voltage, temperature measurement signal is higher than lower limit reference voltage and less than the upper limit
Reference voltage, first comparator A and the second comparator B export low level, and OR gate OR_1 output low levels, T triggers T_1 is defeated
Go out to hold Q to keep output high level, electric heating piece 7 continues to heat, meanwhile, the second LED 2 is turned on, the first light-emitting diodes
Pipe LED1 ends, for reminding the temperature of user's thermal insulation layer 6 to be higher than lower limit temperature, can start to have meal, and first luminous two
Pole pipe LED1 positive pole receives the low level of first comparator A outputs and ended；When the temperature of thermal insulation layer 6 is just above upper limit temperature
When spending the corresponding upper limit working temperature of reference voltage, the temperature measurement signal of the output end of temperature detecting unit 9 output is higher than lower limit reference
Voltage and upper limit reference voltage, first comparator A still export low level, and the second LED 2 is remain on, the first hair
Optical diode LED1 keep extinguish, the second comparator B output high level, OR gate OR_1 output high level, T triggers T_1 due to
Input end of clock CK receives the high level of OR gate OR_1 outputs, and output end Q upsets are output low level, make NPN triode Q1
Cut-off, and then normally opened relay KM1 normally opened contact switch S1 disconnections, electric heating piece 7 stops heating, it is achieved thereby that being led to insulation
The purpose of the rapidly pre-warming of thermosphere 6.
When thermal insulation layer 6 is just cooled to lower working temperature, the temperature measurement signal of the output end of temperature detecting unit 9 output
Less than lower limit reference voltage and upper limit reference voltage, first comparator A output high level, NOT gate NOT_1 output low levels, second
LED 2 ends, and the first LED 1 is turned on, and the second comparator B still exports low level, and OR gate OR_1 is defeated
Go out high level, T output ends Q upsets are output high level, and electric heating piece 7 is begun to warm up；When the temperature of thermal insulation layer 6 is just above lower limit
During operating temperature, the temperature measurement signal of the output end of temperature detecting unit 9 output is higher than lower limit reference voltage and less than upper limit reference electricity
Pressure, first comparator A and the second comparator B export low level, NOT gate NOT_1 output high level, the second light emitting diode
LED2 ends, and the first LED 1 is turned on, and OR gate OR_1 output low levels, T trigger T_1 output ends Q keeps output
High level, after amplifying through NPN triode Q1, remains closed normally opened relay KM1 normally opened contact switch S1, electric heating piece 7 after
Continuous heating；When the temperature of thermal insulation layer 6 upper limit working temperature corresponding just above ceiling temperature reference voltage, temperature detection list
The temperature measurement signal of first 9 output ends output is higher than lower limit reference voltage and upper limit reference voltage, and first comparator A still exports low electricity
Flat, the second LED 2 is remain on, and the first LED 1 keeps extinguishing, the high electricity of the second comparator B outputs
It is flat, OR gate OR_1 output high level, T trigger T_1 output ends Q upsets are output low level, end NPN triode Q1, enter
And normally opened relay KM1 normally opened contact switch S1 disconnects, electric heating piece 7 stops heating, it is achieved thereby that being protected to thermal insulation layer 6
The purpose of temperature.
Described above is only preferred embodiment of the present utility model, and protection domain of the present utility model is not limited merely to
Above-described embodiment, all technical schemes belonged under the utility model thinking belong to protection domain of the present utility model.It should refer to
Go out, for those skilled in the art, some improvement under the premise of the utility model principle is not departed from and
Retouching, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (9)
1. a kind of sick bed with steam table, including bed body (1), it is characterised in that be provided with dining table on the bed body (1)
(3) insulation groove (4), is provided with the dining table (3), the insulation groove (4) includes Pan Kou and the dining table (3) upper surface
Integral disk body (5), the thermal insulation layer (6) being arranged on the disk body (5) inwall, it is arranged on the disk body (5) and institute
The electric heating piece (7) and temperature control system (8) between thermal insulation layer (6) are stated, the temperature control system (8) includes：
Temperature detecting unit (9), for detecting the temperature of thermal insulation layer (6), and exports temperature measurement signal；
Processing unit (10), is coupled to the output end of temperature detecting unit (9), for receiving the temperature measurement signal, and according to institute
State temperature measurement signal and control break-make of the electric heating piece (7) between power supply.
2. a kind of sick bed with steam table according to claim 1, it is characterised in that the temperature detecting unit
(9) include：The thermistor RT of negative temperature coefficient, it is arranged in thermal insulation layer (6), and its one end is coupled to the first direct current
Vout_1, the other end is grounded after being connected with a first resistor R1, and the survey is produced between thermistor RT and first resistor R1
Warm signal.
3. a kind of sick bed with steam table according to claim 2, it is characterised in that processing unit (10) bag
Include:
Lower limit comparison circuit (13), is coupled to the output end of the temperature detecting unit (9), by the temperature measurement signal received and one
Lower limit reference voltage, which compares, exports a lower limit comparison signal；
Upper limit comparison circuit (14), is coupled to the output end of the temperature detecting unit (9), by the temperature measurement signal received and one
Upper limit reference voltage, which compares, exports a upper limit comparison signal；
State switching circuit (15), is coupled to lower limit comparison circuit (13) and upper limit comparison circuit (14), is received to basis
Lower limit comparison signal and upper limit comparison signal export a corresponding control OFF signal；
Circuit (16) is opened and closed, the state switching circuit (15) is coupled to, to control the electric heating according to the control OFF signal
Break-make of the piece (7) between power supply.
4. a kind of sick bed with steam table according to claim 3, it is characterised in that the lower limit comparison circuit
(13) include：
Lower limit reference voltage generation circuit (17), with a second resistance R2, its one end is coupled to the first direct current Vout_1, separately
One end is grounded after being connected with a 3rd resistor R3, and the lower limit reference electricity is produced between second resistance R2 and 3rd resistor R3
Pressure；
First comparator A, with an in-phase input end, an inverting input and an output end, the in-phase input end is coupled to
Between second resistance R2 and 3rd resistor R3, inverting input is coupled between thermistor RT and first resistor R1, output end
Export the lower limit comparison signal.
5. a kind of sick bed with steam table according to claim 4, it is characterised in that the upper limit comparison circuit
(14) include：
Upper limit reference voltage generation circuit (18), with one the 4th resistance R4, its one end is coupled to the first direct current Vout_1, separately
One end is grounded after being connected with one the 5th resistance R5, electric from the upper limit reference is produced between the 4th resistance R4 and the 5th resistance R5
Pressure；
Second comparator B, with an in-phase input end, an inverting input and an output end, the inverting input is coupled to
Between 4th resistance R4 and the 5th resistance R5, in-phase input end is coupled between thermistor RT and first resistor R1, output end
Export the upper limit comparison signal.
6. a kind of sick bed with steam table according to claim 5, it is characterised in that the state switching circuit
(15) include：
OR gate OR_1, with two inputs and an output end, its first input end is coupled to first comparator A output
End, the second input is coupled to the second comparator B output end；
T trigger T_1, with control end T, input end of clock CK and output end Q, its control end T is coupled to the first direct current
Vout_1, its input end of clock CK are coupled to the output end of the OR gate OR_1, and close letter in its output end Q outputs control
Number.
7. a kind of sick bed with steam table according to claim 6, it is characterised in that keying circuit (16) bag
Include：
NPN triode Q1, its grounded emitter, base stage is coupled to the output end of the T triggers T_1 by one the 6th resistance R6
Q and by one the 7th resistance R7 and emitter stage altogether；
Normally opened relay KM1, the first end of its coil is coupled to the second direct current Vout_2, and the second end of its coil is coupled to
The colelctor electrode of NPN triode Q1, its normally opened contact switch S1 is serially connected with the electric heating piece (7) between power supply；
First diode D1, its negative pole is coupled to the first end of normally opened relay KM1 coil, and positive pole is coupled to normally opened relay
Second end of KM1 coil.
8. a kind of sick bed with steam table according to claim 7, it is characterised in that the temperature control system
(8) temperature-prompting unit (11) is also included, the temperature-prompting unit (11) includes,
First LED 1, its positive pole is coupled to first comparator A output end, negative pole ground connection；
NOT gate NOT_1, with an input and an output end, its input is coupled to first comparator A output end；
Second LED 2, its positive pole is coupled to NOT gate NOT_1 output end, negative pole ground connection.
9. a kind of sick bed with steam table according to claim 5, it is characterised in that the electricity of second resistance R2 and the 4th
It is variable resistance, second resistance R2 the first resistance adjusting knob to hinder R4（19）Adjusted with the 4th resistance R4 the second resistance
Knob（20）On the dining table (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621332797.6U CN206560509U (en) | 2016-12-07 | 2016-12-07 | A kind of sick bed with steam table |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621332797.6U CN206560509U (en) | 2016-12-07 | 2016-12-07 | A kind of sick bed with steam table |
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| CN206560509U true CN206560509U (en) | 2017-10-17 |
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| CN201621332797.6U Expired - Fee Related CN206560509U (en) | 2016-12-07 | 2016-12-07 | A kind of sick bed with steam table |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107753211A (en) * | 2017-12-05 | 2018-03-06 | 张艳艳 | A kind of children special-purpose medical bed |
| WO2019227500A1 (en) * | 2018-06-02 | 2019-12-05 | Zhu Xiuqing | Magnetic nursing bed |
| WO2019227501A1 (en) * | 2018-06-02 | 2019-12-05 | Zhu Xiuqing | Multi-function nursing bed |
| WO2019227503A1 (en) * | 2018-06-02 | 2019-12-05 | Zhu Xiuqing | Safe nursing bed |
| WO2019227502A1 (en) * | 2018-06-02 | 2019-12-05 | Zhu Xiuqing | Physiotherapy nursing bed |
| CN112684742A (en) * | 2020-12-24 | 2021-04-20 | 廖天福 | Multifunctional sickbed dining device control circuit |
| CN113545938A (en) * | 2021-07-28 | 2021-10-26 | 陈锐 | High-safety nursing instrument for large-area chest burn and using method thereof |
-
2016
- 2016-12-07 CN CN201621332797.6U patent/CN206560509U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107753211A (en) * | 2017-12-05 | 2018-03-06 | 张艳艳 | A kind of children special-purpose medical bed |
| WO2019227500A1 (en) * | 2018-06-02 | 2019-12-05 | Zhu Xiuqing | Magnetic nursing bed |
| WO2019227501A1 (en) * | 2018-06-02 | 2019-12-05 | Zhu Xiuqing | Multi-function nursing bed |
| WO2019227503A1 (en) * | 2018-06-02 | 2019-12-05 | Zhu Xiuqing | Safe nursing bed |
| WO2019227502A1 (en) * | 2018-06-02 | 2019-12-05 | Zhu Xiuqing | Physiotherapy nursing bed |
| CN112684742A (en) * | 2020-12-24 | 2021-04-20 | 廖天福 | Multifunctional sickbed dining device control circuit |
| CN113545938A (en) * | 2021-07-28 | 2021-10-26 | 陈锐 | High-safety nursing instrument for large-area chest burn and using method thereof |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171017 Termination date: 20181207 |
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| CF01 | Termination of patent right due to non-payment of annual fee |