CN202472309U

CN202472309U - Multifunctional digital display relay

Info

Publication number: CN202472309U
Application number: CN2011205737105U
Authority: CN
Inventors: 周丹
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-12-29
Filing date: 2011-12-29
Publication date: 2012-10-03
Anticipated expiration: 2021-12-29

Abstract

The utility model relates to a multifunctional digital display relay which integrates a timing relay, a counting relay, and a voltage relay together. The multifunctional digital display relay includes a signal input circuit, a signal switching circuit, a one-chip microcomputer control system, a relay, a relay control output circuit, a triode driving circuit, a parameter setting circuit, and a digital tube display module. The one-chip microcomputer control system includes a power supply circuit and a one-chip microcomputer minimum system. The signal amplifying switching circuit, the parameter setting circuit, and the display circuit are connected with the one-chip microcomputer control system respectively. The signal input circuit is connected with the one-chip microcomputer control system via the signal switching circuit. The one-chip microcomputer in the one-chip microcomputer control system is an STM8S103F2 one-chip microcomputer. A user can complete the input switching among the switching amount, the pulse signal, and the direct voltage by the signal switching circuit after only connecting two signal input wires, and the time control, the counting control, and the direct voltage detection control functions of the relay are realized. In certain application occasions, the multifunctional digital display relay can totally replace the digital display time relay, the counting relay, and the voltage relay.

Description

The multifunctional digital relay

[technical field]

The utility model relates to a kind of multifunctional digital relay that integrates timing, counting, voltage relay.

[background technology]

Digital display time relay belongs to the on-delay type, is the controller of new generation that developed recently gets up, and it adopts eight micro computers is acp chip; Group of four figures pipe shows; Be applicable to exchange 60HZ, make time-delay element in the control circuit of WV 220V, connect on schedule or the branch deenergizing.

The present used digital display time relay of automation control area; Generally be timing, time-delay adhesive or the release that decides relay with time quantum; Promptly make the relevant action of relay completion, do not possess the mode that input signal (switching value, pulse signal, DC voltage) is detected and make the actuating of relay with the mode of time value set, but in some application scenario; Need collection external switch signal number of times, pulse signal number of times, magnitude of voltage equivalent to decide the adhesive or the release of relay; The user often needs to dispose in addition equipment such as counting relay, voltage relay and accomplishes inter-related task, and cost increases equipment cost than the large equipment investment in the simple application occasion often; And, cause the wasting of resources in always some idleness of equipment of different times.

On October 19th, 2005, Granted publication, the patent No. were 200420089705.7; Name is called the utility model patent of " digital display counting, time switch "; Disclose a kind of counting, the dual-purpose relay of timing, comprised power supply unit, crystal oscillator, prevalue set mechanism, topworks, driving circuit, display circuit and delay control circuit, the delay control circuit of this relay has adopted the programmable integrated circuit KJ3618 of a special use; Integrated circuit Kj3618 has 18 ports; Through above-mentioned port is defined again, write specific program, realized the function that mode of operation, timing mode, count mode, test pattern are selected.Above-mentioned relay digital display time relay circuit has more in the past had very big simplification; And very big reinforcement has been arranged also on function; As not only have basic mode formula and a mode of operation selection function when multiple; Counting timing selection function stops counting or continues to count two kinds of model selection functions after counting arrives in addition.But this relay construction is complicated, and cost is higher, operate loaded down with trivial detailsly, and does not possess the function of voltage relay, so the further raising that awaits.

[utility model content]

The utility model technical matters to be solved is to provide a kind of relay of multifunctional digital cheaply; Can be on the basis of original timing action; Integrate timing, counting, voltage relay; Possessed function, saved equipment investment according to the Numerical Control actuatings of relay such as signaling switch amount, pulse signal or dc voltage value of input.

The technical scheme of the utility model is: the multifunctional digital relay; Comprise signal input circuit, signal switching circuit, single-chip computer control system, transistor drive circuit, relay, relay controlling output circuit, parameter setting circuit and charactron display module; Single-chip computer control system comprises power circuit and single-chip minimum system, and said signal switching circuit, parameter setting circuit and display circuit all are connected with said single-chip computer control system; Said signal input circuit is connected with said single-chip computer control system through signal switching circuit.

As the further improvement of such scheme, the used single-chip microcomputer of said single-chip computer control system is a STM8S103F2 type single-chip microcomputer.

The advantage of the utility model is: the existing digital display time relay hardware in market comprises control system, driving circuit, relay, charactron display module composition; Function singleness; And product is designed a kind of input signal commutation circuit in order to address the above problem, in conjunction with hardware such as single-chip microcomputer, charactron, relays; The user only need connect two signal input lines; Switch through input signal commutation circuit of the present invention, the input that can accomplish switching value, pulse signal, DC voltage is switched, and has realized that time control, counting control, the DC voltage of relay detects control function; Can substitute digital display time relay, counting relay, voltage relay fully in some application scenario; And switch flexibly, reduced the complexity of wiring, have that volume is little, cost is low, practical, easy to use a, thing with characteristics such as use more.

[description of drawings]

Combine embodiment that the utility model is done further to describe with reference to the accompanying drawings.

Fig. 1 is the logic relation picture of the utility model structure,

Fig. 2 is the circuit theory diagrams of the utility model signal switching circuit,

Fig. 3 is a STM8S103F2 type single-chip microcomputer pin synoptic diagram,

Fig. 4 is the software program flow chart of the utility model.

Among the figure: 1 is single-chip computer control system, and 2 is three LED charactron display modules, and 3 is the parameter setting circuit, and 4 is relay, 5 relay controlling output circuit, and 6 is signal input wires terminal, and 7 is signal switching circuit, and 8 is transistor drive circuit.

[embodiment]

Shown in accompanying drawing 1; The multifunctional digital relay; Comprise single-chip computer control system 1, three LED charactron display modules 2, parameter setting circuit 3, relay 4, relay controlling output circuit 5, signal input circuit 6, signal switching circuit 7, transistor drive circuit 8; Single-chip computer control system 1 comprises power circuit and single-chip minimum system; Said signal switching circuit 7, transistor drive circuit 8, parameter setting circuit 3 all is connected with single-chip computer control system 1 with three LED charactron display modules 2; Said signal input circuit 6 is connected with single-chip computer control system 1 through signal switching circuit 7.

The each several part technical characterictic:

Single-chip computer control system 1 comprises power circuit and single-chip minimum system circuit, realizes each pattern work of sequencing control, can switch to three kinds of functional modes: time relay pattern, counter mode, voltage relay pattern; This SCM system adopts cheap STM8S103F2 type single-chip microcomputer; Other has the single-chip microcomputer such as the PIC16F690 that can reach the phase function; But its price is more than 3 times of STM8S103F2, so present embodiment adopts comparatively cheap STM8S103F2 type single-chip microcomputer to reduce equipment cost.

The program storage (ROM) of this single-chip microcomputer the is integrated data-carrier store (RAM) of 1K byte capacity, 4K byte capacity; Can satisfy multi-functional program design requirement; Integrated 10 analog-to-digital conversion modules (ADC) can satisfy the voltage detecting task of 0-100V voltage range, precision 0.1V, and pin can the directly driving LED charactron module demonstration of maximum input 20mA electric current.The single-chip microcomputer of high integration makes circuit more succinct, (shown in Figure 3 is the pinout of STM8S103F2 type single-chip microcomputer).This product mainly uses its PD5 port and PA1 port to accomplish various relay signal works of treatment.

Three LED charactron display modules 2 are at the single-chip computer control system 1 control state of each pattern of demonstration down, match with seven segment numerical and every 's radix point, show parameter and state under each pattern, have reduced the use of charactron position;

Parameter setting circuit 3 cooperates through two microswitch SET, ENTER, with short by, longly carry out the setting of each mode parameter by combination, reduced the quantity of microswitch.

Relay 4 coil voltages that adopt are 5V or 12V, and the electric shock capacity is 10A/275VAC, and one group of conversion (often open, normally closed contact) can be satisfied the switch of family expenses or part industrial electrical installation and control.

Shown in accompanying drawing 2,

Signal switching circuit 7 comprises two group of three pin wire jumper: voltage detecting switches wire jumper J3 and wire jumper J2 is switched in switching value, pulse; And a bleeder circuit and an isolation coupling circuit; The isolation coupling circuit comprises a linear optical coupling U2; This linear optical coupling U2 the 1st, the 2nd pin is directly parallelly connected with electric capacity, the 2nd, the 3rd pin ground connection, and its 4th pin connects the PA1 pin of pull-up resistor R5 and STM8S103F2 type single-chip microcomputer; Voltage detecting is switched wire jumper J3 first contact pin and is connected with the PD5 pin of STM8S103F2 type single-chip microcomputer through bleeder circuit; Its second contact pin is connected with the 2nd pin of signal input circuit J1, and its 3rd contact pin is connected with the 1st pin of linear optical coupling U2 through an adjustable resistance R1; The first contact pin ground connection that wire jumper J2 is switched in switching value, pulse, its second contact pin is connected with the 1st pin of signal input circuit J1, and its 3rd contact pin connects power supply VCC.Utilize the connected mode of two group of three pin wire jumper (J2, J3 among the figure) cooperation jumper cap, the switching between switching, switching value count signal and the pulse counting signal of input of realization voltage detecting and count signal input.

Signal input circuit J1 is the external signal input terminal; The user can connect the input of switching value counting, step-by-step counting input, DC voltage detection input signal as required; When input variety classes signal; Switch the relevant work pattern by jumper cap control signal commutation circuit 7, and institute's value is delivered to single-chip computer control system 1 carry out signal Processing.

The realization principle that signal switches:

(1) when the jumper cap short circuit connects 1,2 ends of switching value, pulse switching wire jumper J2 and voltage detecting switching wire jumper J3, the 1 end ground connection of J1,2 ends of J2 are connected to bleeder circuit; But this moment the J1 input direct voltage; 1 end of J1 is the input negative pole, and 2 ends are anodal for input, and electric current is imported by 2 ends; To single-chip microcomputer PD5 pin, single-chip microcomputer STM8S103F2 collection PD5 port voltage carried out analog-to-digital conversion process when voltage detecting was made in the signal input through bleeder circuit.

(2) when the jumper cap short circuit connects 1,2 ends of 2,3 ends and J2 of J3, the 1 end ground connection of J1,2 ends of J1 and bleeder circuit disconnection; Logical with adjustable resistance R1 one termination, but this moment J1 input pulse count signal, 1 end of J1 is the input negative pole; 2 ends are anodal for input; Input signal is imported through resistance R 1 and R2 current limliting to optocoupler, and R1 is used for regulating the decaying pulse signal, reaches the trigger current that optocoupler U2 needs.Optocoupler can be selected linear optical coupling PC817B for use, makes optocoupler export the PA1 pin of high and low level to single-chip microcomputer STM8S103F2 through the resistance of regulating R1 and R5.

(3) when the jumper cap short circuit connects 2,3 ends of 2,3 ends and J2 of J3; 2 ends of J1 and bleeder circuit break off, and lead to the optocoupler input end with R1 one termination, and 1 end of J1 and power supply VCC connect; Break off with power supply ground; This moment, input end J1 can gather passive switch amount signal: after J1 end input switch signal was connected, electric current was delivered to R1, R2 by VCC through J1 terminal and the connection of J3 terminal, again to the optocoupler input end; The PA1 pin that the optocoupler input end connects single-chip microcomputer STM8S103F2 can produce low level signal, makes counting when single-chip microcomputer collects the negative edge signal and handles.

This product function mode switch and method of operating:

Referring to Fig. 4, during product energising work, the original state charactron shows " P-0 "; Select relevant work pattern through " SET " key of function setting key this moment; The selectable functions pattern is: " P-1 " is time relay pattern, and " P-2 " is the counting relay pattern, and " P-3 " is the voltage relay pattern; Weak point can carry out corresponding modes in one second by function setting " ENTER " key, and long " ENTER " key of pressing can return to the model selection state in three seconds under each pattern.

Under " P-1 " time relay pattern; Can lack the timing that relay adhesive and release are set by function setting " SET " and " ENTER " key; Length is switched by the unit that " SET " key can carry out minute timing or timing in second in three seconds, and the timing numerical value of lighting the current demonstration of expression with the decimal of the rightest one digit number sign indicating number pipe is minute unit.Like this, three denotable maximum timing times of charactron are 999 seconds or 999 minutes.Under " P-2 " counting relay pattern; The user can be used to count the negative edge number (active or passive switch amount) of external input signal; The charactron maximum count can be represented " 9.9.9. ", three radix point are represented kilobit with binary mode, so the displayed value maximum can represent 7999; Integer in the user can set one 7999, relay adhesive when external signal reaches setting value.

Under " P-3 " voltage relay pattern; Relay adhesive when initial; The user can set the upper limit and lower voltage limit of a voltage, handles through SCM program, breaks off when input voltage is higher than time-limit relay; Treat that voltage is lower than relay adhesive again after the lower limit of setting, this function can be used for voltage monitoring control.

The control of this product through single-chip computer control system 1, three digital display module 2 display working conditions of LED and parameter with digital display time relay, counting relay, voltage relay combination, realize the multifunctional digital relay.Accomplish multi-functional combined task with the cost of a time relay, have stronger practicality and higher resource utilization.

Although illustrated and described the embodiment of the utility model; For those of ordinary skill in the art; Be appreciated that under the situation of principle that does not break away from the utility model and spirit and can carry out multiple variation, modification, replacement and modification to these embodiment, the scope of the utility model is limited accompanying claims and equivalent thereof.

Claims

1. multifunctional digital relay; Comprise signal input circuit, signal switching circuit, single-chip computer control system, transistor drive circuit, relay, relay controlling output circuit, parameter setting circuit and charactron display module; Single-chip computer control system comprises power circuit and single-chip minimum system, and said signal switching circuit, parameter setting circuit and display circuit all are connected with said single-chip computer control system; It is characterized in that: said signal input circuit is connected with said single-chip computer control system through signal switching circuit.

2. according to the said multifunctional digital relay of claim 1, it is characterized in that: the used single-chip microcomputer of said single-chip computer control system is a STM8S103F2 type single-chip microcomputer.

3. according to the said multifunctional digital relay of claim 2; It is characterized in that: said signal switching circuit comprises two group of three pin wire jumper: voltage detecting switches wire jumper and wire jumper is switched in switching value, pulse; And a bleeder circuit and an isolation coupling circuit, said isolation coupling circuit comprises a linear optical coupling, this linear optical coupling the 1st, the 2nd pin is directly parallelly connected with electric capacity; 2nd, the 3rd pin ground connection, its 4th pin connects the PA1 pin of pull-up resistor and STM8S103F2 type single-chip microcomputer; Said voltage detecting is switched wire jumper first contact pin and is connected through the PD5 pin of said bleeder circuit with said STM8S103F2 type single-chip microcomputer; Its second contact pin is connected with the 2nd pin of said signal input circuit, and its 3rd contact pin is connected with the 1st pin of said linear optical coupling through an adjustable resistance; The first contact pin ground connection that wire jumper is switched in said switching value, pulse, its second contact pin is connected with the 1st pin of said signal input circuit, and its 3rd contact pin connects power supply VCC.

4. according to the said multifunctional digital relay of claim 3, it is characterized in that said linear optical coupling is linear optical coupling PC817B.

5. according to each said multifunctional digital relay of claim 1～4, it is characterized in that: said parameter setting circuit carries out the setting of each mode parameter with array mode through two microswitches.